US10485844B2 - Methods for treating severe atopic dermatitis by administering an IL-4R inhibitor - Google Patents

Methods for treating severe atopic dermatitis by administering an IL-4R inhibitor Download PDF

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US10485844B2
US10485844B2 US15/711,815 US201715711815A US10485844B2 US 10485844 B2 US10485844 B2 US 10485844B2 US 201715711815 A US201715711815 A US 201715711815A US 10485844 B2 US10485844 B2 US 10485844B2
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inhibitor
patient
dose
patients
baseline
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US20180078603A1 (en
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Allen Radin
Neil Graham
Bolanle AKINLADE
Gianluca PIROZZI
Xing Sun
Thomas Hultsch
Brad S. SHUMEL
Ashish Bansal
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Sanofi Biotechnology SAS
Regeneron Pharmaceuticals Inc
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Regeneron Pharmaceuticals Inc
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00—Medicinal preparations containing peptides
    • A61K38/02—Peptides of undefined number of amino acids; Derivatives thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
    • A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
    • C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
    • C07K16/24—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against cytokines, lymphokines or interferons
    • C07K16/244—Interleukins [IL]
    • C07K16/247—IL-4
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
    • C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
    • C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
    • C07K16/2866—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against receptors for cytokines, lymphokines, interferons
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K7/00—Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
    • C07K7/04—Linear peptides containing only normal peptide links
    • C07K7/06—Linear peptides containing only normal peptide links having 5 to 11 amino acids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00—Medicinal preparations containing antigens or antibodies
    • A61K2039/505—Medicinal preparations containing antigens or antibodies comprising antibodies
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00—Medicinal preparations containing antigens or antibodies
    • A61K2039/54—Medicinal preparations containing antigens or antibodies characterised by the route of administration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00—Medicinal preparations containing antigens or antibodies
    • A61K2039/545—Medicinal preparations containing antigens or antibodies characterised by the dose, timing or administration schedule
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00—Medicinal preparations containing antigens or antibodies
    • A61K39/395—Antibodies; Immunoglobulins; Immune serum, e.g. antilymphocytic serum
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K2317/00—Immunoglobulins specific features
    • C07K2317/20—Immunoglobulins specific features characterized by taxonomic origin
    • C07K2317/21—Immunoglobulins specific features characterized by taxonomic origin from primates, e.g. man

Definitions

  • the present invention relates to methods for treating atopic dermatitis. More specifically, the invention relates to the administration of an interleukin-4 receptor (IL-4R) inhibitor in a subject in need thereof.
  • IL-4R interleukin-4 receptor
  • Atopic dermatitis is a chronic/relapsing inflammatory skin disease characterized by intense pruritus (i.e., itchiness), xerosis (skin dryness), and eczematous lesions whose features include erythema, infiltration/papulation, oozing with crusting, excoriations, and lichenification. It is often associated with other atopic disorders, such as allergic rhinitis and asthma. Severe disease can be extremely disabling due to several factors: major psychological problems, significant sleep loss, and impaired quality of life (QOL) that lead to a high socioeconomic cost. An estimated 2% to 10% of adults are affected by AD (Bieber 2008, N. Engl. J. Med. 358:1483-94).
  • AD The pathophysiology of AD is influenced by a complex interplay between inflammation, environmental factors, genetics and skin barrier dysfunction.
  • AD is the most common inflammatory skin disease in childhood (Illi et al 2004, J. Allergy Clin. Immunol. 113: 925-31). The disease usually presents during early infancy and childhood, but it can persist into or start in adulthood (Kay et al 1994, J. Am. Acad. Dermatol. 30: 35-9). The disease affects 15 to 30% of children and 2 to 10% of adults in industrialized countries (Bieber 2008, N. Engl. J. Med. 358: 1483-94). Phase 1 of the International Study of Asthma and Allergies in Childhood showed a 1-year period prevalence rate as high as 20% in Australia, England, and Scandinavia (Williams et al 1999, J. Allergy Clin. Immunol.
  • AD constitutes the first step of atopic march (progression from one atopic disease to another). Approximately up to 60% of AD patients have concomitant asthma or allergic rhinitis or food allergy (Hong et al 2012, Envt. Health Toxicol. 27: e2012006).
  • Topical corticosteroids are primarily the most frequently prescribed class of drugs for AD patients. However, long-term application of TCS is not recommended because of the risk of skin atrophy, dyspigmentation, acneiform eruptions, and risks associated with systemic absorption (e.g., hypothalamic pituitary axis effects, Cushing's disease, etc.).
  • Topical calcineurin inhibitors are generally effective and safe as short-term treatments, but concerns of skin malignancies and increased risk of lymphomas have prompted regulatory authorities to require a warning regarding the long-term safety of topical tacrolimus and pimecrolimus in their prescribing information.
  • systemic agents are used off label (cyclosporine, methotrexate, azathioprine, mycophenolate mofetil, systemic corticosteroids) and lack evidence basis of use. All of these agents have a broad immunosuppressive effect which predisposes the patients to serious infections and increased risk of malignancies if used for prolonged periods.
  • Cyclosporine A CSA
  • CSA Cyclosporine A
  • TNF tumor necrosis factor ⁇
  • IgE inhibitors e.g., omalizumab
  • IL-5 inhibitors e.g., mepolizumab
  • CD11a inhibitors e.g., efalizumab
  • methods are provided for treating, preventing and/or reducing the severity of a symptom of atopic dermatitis (AD), including moderate-to-severe AD and severe AD.
  • Certain embodiments of the invention pertain to methods for treating patients with severe AD that is resistant to treatment or is inadequately controlled by systemic therapy (including a systemic immunosuppressant).
  • the present invention includes methods of treating patients with severe AD that is uncontrolled despite treatment with a systemic therapeutic agent.
  • the present invention includes methods of treating patients with severe AD for whom treatment with a systemic therapeutic agent (e.g., a systemic immunosuppressant) is medically inadvisable.
  • a systemic therapeutic agent e.g., a systemic immunosuppressant
  • the methods of the present invention comprise administering to a subject or a patient in need thereof one or more doses of a pharmaceutical composition comprising a therapeutically effective amount of an interleukin-4 receptor (IL-4R) inhibitor.
  • IL-4R interleukin-4 receptor
  • the IL-4R inhibitor is administered as monotherapy.
  • the IL-4R inhibitor is administered in combination with a topical therapy (such as a topical corticosteroid or a topical calcineurin inhibitor).
  • the systemic therapeutic agent is an immunosuppressant selected from the group consisting of cyclosporine A, methotrexate, mycophenolate mofetil, azathioprine, an oral corticosteroid, and interferon-gamma.
  • the present invention includes methods to treat severe AD or to improve at least one AD-associated parameter in a patient, the methods comprising administering a pharmaceutical composition comprising a therapeutically effective amount of an antibody or antigen-binding fragment thereof that binds IL-4R, and determining an improvement in an AD-associated parameter.
  • the administration of the IL-4R inhibitor results in an improvement in one or more AD-associated parameters selected from the group consisting of Investigators Global Assessment (IGA); Body Surface Area Involvement of Atopic Dermatitis (BSA); Eczema Area and Severity Index (EASI); Scoring atopic dermatitis (SCORAD); 5-D Pruritus Scale; and Pruritus Numeric Rating Scale (NRS).
  • administration of the IL-4R inhibitor results in an improvement in at least one patient-related outcome selected from the group consisting of Global Individual Signs Score (GISS), Patient Oriented Eczema Measure (POEM), Patient-assessed Hospital Anxiety and Depression Scale (HADS) and Patient-reported Dermatology Life Quality Index (DLQI).
  • GISS Global Individual Signs Score
  • POEM Patient Oriented Eczema Measure
  • HADS Patient-assessed Hospital Anxiety and Depression Scale
  • DLQI Patient-reported Dermatology Life Quality Index
  • the methods comprise administering a pharmaceutical composition comprising a therapeutically effective amount of an IL-4R inhibitor to the patient in need thereof.
  • the administration results in one or more of the following effects: (a) more than 70% reduction from baseline in EASI score; (b) more than 50% reduction from baseline in pruritus NRS from week 2 after administration of the first dose; (c) a 4-point reduction from baseline in pruritus NRS as early as week 2 after administration of first dose; (d) patient achieves IGA of 0 or 1 (“clear” or “almost clear”) with a reduction of points from baseline on a 0 to 4 IGA scale; (e) an improvement in the quality of life of the patient.
  • the IL-4R inhibitor is administered as monotherapy.
  • the IL-4R inhibitor is administered in combination with a topical therapy (such as a topical corticosteroid or a topical calcineurin inhibitor).
  • the present invention provides methods for treating or reducing pruritus in a patient with severe AD wherein the patient is a candidate for systemic therapy.
  • the methods comprise selecting a patient diagnosed with severe AD wherein the patient is resistant, inadequately responsive or intolerant to a systemic immunosuppressant; and administering to the patient in need thereof one or more doses of an IL-4R inhibitor.
  • the IL-4R inhibitor is administered as monotherapy.
  • the IL-4R inhibitor is administered in combination with a topical therapy (such as a topical corticosteroid or a topical calcineurin inhibitor).
  • the administration of the IL-4R inhibitor results in more than 70% reduction from baseline in EASI score, more than 50% reduction from baseline in pruritus NRS, a ⁇ 4-point reduction from baseline in pruritus NRS, and/or a reduction of ⁇ 2 points from baseline on a 0 to 4 IGA scale.
  • the present invention includes methods of treating a patient with severe AD.
  • the methods comprise selecting a patient with severe AD, wherein the patient has been previously treated with a therapeutic selected from the group consisting of cyclosporine A, an IgE inhibitor, a TNFalpha inhibitor, a CD11a inhibitor, a CD20 inhibitor, an antibiotic, an IL-4R inhibitor (e.g., an anti-IL-4R antibody such as dupilumab), a systemic immunosuppressant, a topical corticosteroid, an oral corticosteroid, calcineurin inhibitor and phototherapy; and administering one or more doses of an IL-4R inhibitor to the patient in need thereof.
  • the present invention includes methods to reduce the dependence on topical corticosteroids (TCS) in a patient with severe AD, the methods comprising administering one or more doses of an IL-4R inhibitor to the subject in need thereof.
  • TCS topical corticosteroids
  • a medium-potency or high-potency TCS is concomitantly administered with the IL-4R inhibitor.
  • the amount of TCS is gradually reduced by at least 20%, at least 30%, at least 40% or at least 50% upon administration of the first dose of the IL-4R inhibitor.
  • the present invention includes methods to reduce flares or AD exacerbations, the methods comprising selecting a patient with severe AD and administering one or more doses of an IL-4R inhibitor to the patient in need thereof.
  • the patient has refractory AD or has relapsed after therapy with a systemic therapeutic agent (e.g., a systemic immunosuppressant).
  • a systemic therapeutic agent e.g., a systemic immunosuppressant
  • the present invention includes methods to treat AD or to reduce pruritus or to improve an AD-associated parameter, the methods comprising selecting a patient with moderate-to-severe or severe AD wherein the patient has been previously treated more than 5 weeks ago, more than 8 weeks ago, more than 13 weeks ago, or more than 20 weeks ago with an IL-4R inhibitor (e.g., an anti-IL-4R antibody such as dupilumab) and re-treating the patient in need thereof with one or more doses of an IL-4R inhibitor wherein the re-treatment leads to more than 70% reduction from baseline in EASI score, more than 50% reduction from baseline in pruritus NRS, a ⁇ 4-point reduction from baseline in pruritus NRS, and/or a reduction of ⁇ 2 points from baseline on a 0 to 4 IGA scale.
  • each dose of the IL-4R inhibitor comprises about 50-600 mg and is administered 1, 2, 3 or 4 weeks after the immediately preceding dose.
  • the methods of the present invention comprise administering one or more doses of an IL-4R inhibitor to a subject in need thereof.
  • the methods of the present invention comprise administering about 10 mg to about 600 mg of an IL-4R inhibitor as an initial dose followed by one or more secondary doses, each secondary dose comprising 25 to 400 mg of an IL-4R inhibitor.
  • the initial dose and the one or more secondary doses each comprise about 10 mg to about 600 mg of the IL-4R inhibitor.
  • the IL-4R inhibitor is administered at an initial dose of 600 mg followed by one or more secondary doses wherein each secondary dose comprises 300 mg.
  • the IL-4R inhibitor may be administered to the subject at a dosing frequency of, e.g., once a week, once in 2 weeks, once in 3 weeks or once in 4 weeks.
  • each secondary dose is administered 1 week after the immediately preceding dose.
  • each secondary dose is administered 2 weeks after the immediately preceding dose.
  • the methods of the present invention comprise administering an IL-4R inhibitor to a subject in need thereof wherein the IL-4R inhibitor comprises about 1-10 mg/kg of the subject's body weight.
  • the subject in need thereof is administered one or more doses of the IL-4R inhibitor wherein each dose comprises 1, 2, 4, 5 or 10 mg/kg of the subject's body weight and wherein each dose is administered 1-4 weeks after the immediately preceding dose.
  • Exemplary IL-4R inhibitors that can be used in the context of the methods of the present invention include, e.g., small molecule chemical inhibitors of IL-4R or its ligands (IL-4 and/or IL-13), or biological agents that target IL-4R or its ligands.
  • the IL-4R inhibitor is an antigen-binding protein (e.g., antibody or antigen-binding fragment thereof) that binds the IL-4R ⁇ chain and blocks signaling by IL-4, IL-13, or both IL-4 and IL-13.
  • the antibody or antigen-binding fragment thereof that specifically binds IL-4R comprises complementarity determining regions (CDRs) in a heavy chain variable region (HCVR)/light chain variable region (LCVR) sequence pair of SEQ ID NOs: 1/2.
  • the antibody or antigen-binding fragment thereof comprises a heavy chain CDR (HCDR1) having amino acid sequence of SEQ ID NO: 3, a HCDR2 having amino acid sequence of SEQ ID NO: 4, a HCDR3 having amino acid sequence of SEQ ID NO: 5, a light chain CDR (LCDR1) having amino acid sequence of SEQ ID NO: 6, a LCDR2 having amino acid sequence of SEQ ID NO: 7, and a LCDR3 having amino acid sequence of SEQ ID NO: 8.
  • HCDR1 having amino acid sequence of SEQ ID NO: 3
  • a HCDR2 having amino acid sequence of SEQ ID NO: 4
  • a HCDR3 having amino acid sequence of SEQ ID NO: 5
  • LCDR1 light chain CDR
  • LCDR2
  • the IL-4R inhibitor is administered subcutaneously, intravenously, or intraperitoneally to the subject.
  • the present invention provides use of an IL-4R inhibitor of the invention in the manufacture of a medicament to treat moderate-to-severe or severe AD or to reduce pruritus in a patient, wherein the patient is a candidate for systemic therapy (e.g., a systemic immunosuppressant)
  • the patient is resistant or intolerant to systemic therapy or for whom systemic therapy is inadvisable due to safety and health risks coupled with suboptimal efficacy.
  • the present invention provides use of an IL-4R inhibitor of the invention in the manufacture of a medicament reduce dependence on topical corticosteroids in a patient with severe AD.
  • the present invention provides use of an IL-4R inhibitor in a method to treat severe AD or to reduce pruritus in a patient with severe AD, wherein the IL-4R inhibitor is administered to a subject in need thereof. In certain embodiments, the present invention provides use of an IL-4R inhibitor in a method to reduce dependence on topical corticosteroids in a subject with severe AD, wherein the IL-4R inhibitor is administered to the subject in need thereof.
  • the present invention includes methods which comprise administering to a subject in need thereof a therapeutic composition comprising an IL-4R inhibitor.
  • a subject in need thereof means a human or non-human animal that exhibits one or more symptoms or indicia of atopic dermatitis, and/or who has been diagnosed with atopic dermatitis.
  • Atopic dermatitis means an inflammatory skin disease characterized by intense pruritus (e.g., severe itch) and by scaly and dry eczematous lesions.
  • the term “atopic dermatitis” includes, but is not limited to, AD caused by or associated with epidermal barrier dysfunction, allergy (e.g., allergy to certain foods, pollen, mold, dust mite, animals, etc.), radiation exposure, and/or asthma.
  • the present invention encompasses methods to treat patients with moderate-to-severe or severe AD.
  • moderate-to-severe AD is characterized by intensely pruritic, widespread skin lesions that are often complicated by persistent bacterial, viral or fungal infections.
  • Moderate-to-severe AD also includes chronic AD in patients.
  • the chronic lesions include thickened plaques of skin, lichenification and fibrous papules.
  • Patients affected by moderate-to-severe AD also, in general, have more than 20% of the body's skin affected, or 10% of skin area in addition to involvement of the eyes, hands and body folds.
  • Moderate-to-severe AD is also considered to be present in patients who require frequent treatment with topical corticosteroids.
  • a patient may also be said to have moderate-to-severe AD when the patient is resistant or refractory to treatment by either a topical corticosteroid or a calcineurin inhibitor.
  • the term “a subject in need thereof” refers to patients with severe AD.
  • severe AD refers to chronic relapsing AD that is refractory to treatment with medium-potency and high-potency TCS and/or immunosuppressant therapy. Severe AD is also characterized by chronic intensely pruritic lesions affecting more than 20% of the body surface area.
  • the term refers to chronic AD according to the Eichenfield criteria (Eichenfield et al 2014, J. Am. Acad. Dermatol. 70: 338-351) for which treatment with potent topical corticosteroids (TCS) is indicated.
  • the term includes patients with chronic AD that are resistant to treatment with systemic corticosteroids and/or non-steroidal immunosuppressants.
  • a patient with severe AD may also show frequent exacerbations or flares of the disease.
  • severe AD refers to patients with Investigators Global Assessment (IGA) score of 4.
  • “flare”, also referred to as “exacerbation” refers to an increase in signs and/or symptoms leading to escalation of therapy, which can be an increase in the dose of an immunosuppressant therapy (e.g., cyclosporine A), a switch to a higher-potency class of TCS, or the start of another oral immunosuppressive drug.
  • an immunosuppressant therapy e.g., cyclosporine A
  • the present invention includes methods to reduce the number of flares or exacerbations in a patient with severe AD, the methods comprising administering a therapeutically effective amount of an IL-4R inhibitor to the patient in need thereof.
  • the term “subject in need thereof” includes subjects resistant, non-responsive or inadequately responsive to treatment with a systemic immunosuppressant.
  • the present invention includes methods to treat AD in subjects or patients resistant, non-responsive or inadequately responsive to treatment with a systemic immunosuppressant.
  • resistant, non-responsive or inadequately responsive to a systemic immunosuppressant refers to subjects or patients with AD who have been treated with a systemic immunosuppressant and wherein the immunosuppressant does not have a therapeutic effect.
  • the term refers to reduced patient compliance and/or toxicity and side effects and/or ineffectiveness of the administered immunosuppressant to reduce, ameliorate or decrease the symptoms of AD.
  • the term refers to patients suffering from moderate-to-severe AD or severe AD who are refractory to treatment by a systemic immunosuppressant. In some embodiments, the term refers to patients with AD which is uncontrolled despite treatment with an immunosuppressant. In some embodiments, the patients who are “resistant, non-responsive or inadequately responsive to a systemic immunosuppressant” may show no improvement in one or more AD-associated parameters. Examples of AD-associated parameters are described elsewhere herein. For example, treatment with a systemic immunosuppressant may result in no decrease in pruritus or Eczema Area and Severity Index (EASI) score or Body Surface Area (BSA) score.
  • EASI Eczema Area and Severity Index
  • BSA Body Surface Area
  • the term refers to patients with severe AD that have been treated with systemic immunosuppressant, but have since relapsed and/or show increased AD exacerbations or flares. In certain embodiments, the term refers to patients with severe AD for whom immunosuppressant therapy is inadvisable due to safety and health risks to the patient coupled with suboptimal efficacy. In some embodiments, the present invention includes methods to treat moderate-to-severe AD or severe AD in patients who have been treated earlier with a systemic immunosuppressant for 1 month and do not show a decrease in one or more AD-associated parameters.
  • the present methods may be used to treat a patient with chronic relapsing AD who has been treated with a systemic immunosuppressant and has a Body Surface Area (BSA) score of 10% or an Investigators Global Assessment (IGA) score ⁇ 3.
  • BSA Body Surface Area
  • IGA Investigators Global Assessment
  • the term “subject in need thereof” includes patients with severe AD whose disease cannot be adequately controlled with TCS, who are not adequately controlled with, or are intolerant to oral immunosuppressant, or when immunosuppressant treatment is currently deemed not medically advisable by a physician, according to the following: (A) No prior immunosuppressant exposure (who are not currently a candidate for such treatment) due to:
  • the term “subject in need thereof” includes patients with moderate-to-severe or severe AD who are candidates for systemic therapy.
  • systemic therapy refers to systemically administered therapeutic agents (e.g., orally administered corticosteroids) and other immunosuppressant or immunomodulatory agents.
  • systemic immunosuppressant includes, but is not limited to, cyclosporine A, methotrexate, mycophenolate mofetil, azathioprine, systemic or oral corticosteroids, and interferon-gamma.
  • the term also includes immunobiologics such as tumor necrosis factor alpha (TNF ⁇ ) inhibitors (e.g., an anti-TNF ⁇ antibody such as infliximab), CD11a inhibitors (e.g., an anti-CD11a antibody such as efalizumab), IgE inhibitors (e.g., omalizumab), CD20 inhibitors (e.g., rituximab).
  • TNF ⁇ tumor necrosis factor alpha
  • CD11a inhibitors e.g., an anti-CD11a antibody such as efalizumab
  • IgE inhibitors e.g., omalizumab
  • CD20 inhibitors e.g., rituximab
  • Systemic therapy including systemic immunosuppressants may be used for short-term treatment of flares or as a temporary measure to control disease, but their use is limited by significant side-effects, e.g., growth retardation in children, Cushing's syndrome, hypertension, glucose intolerance, myopathy, osteonecrosis, glaucoma and cataracts.
  • Use of systemic immunosuppressants also carries the risk of rebound phenomenon, wherein symptoms of the disease may worsen significantly following cessation of treatment.
  • the terms “systemic therapy”, “systemic therapeutic agent” and “systemic immunosuppressant” have been used interchangeably throughout this disclosure.
  • the term “subject in need thereof” includes patients with moderate-to-severe or severe AD who have been administered one or more TCS for more than 6 months, more than 1 year, more than 2 years, more than about 5 years, more than about 7 years, or more than about 10 years, in addition to periodic treatment with an immunosuppressant.
  • the term “subject in need thereof” includes patients with moderate-to-severe or severe AD that have been previously treated with a therapeutic selected from the group consisting of cyclosporine A, an IgE inhibitor, a TNFalpha inhibitor, a CD11a inhibitor, a CD20 inhibitor, an IL-4R inhibitor (e.g., an anti-IL-4R antibody such as dupilumab), an antibiotic, a systemic immunosuppressant, a topical corticosteroid, an oral corticosteroid, calcineurin inhibitor and phototherapy.
  • the patients may desire to minimize or avoid the adverse side effects of the TCS and/or immunosuppressant.
  • the present invention includes methods to treat moderate-to-severe or severe AD in a patient, the methods comprising administering an IL-4R inhibitor concomitantly with a TCS wherein the dosage is adjusted to minimize or prevent adverse side effects of the TCS.
  • the present invention includes methods to reduce dependence on TCS in a patient with moderate-to-severe or severe AD; the methods comprising administering a therapeutically effective amount of an IL-4R inhibitor concomitantly with a potent TCS wherein the amount of TCS used by the patient is reduced by about 50% as compared to a patient not administered the IL-4R inhibitor.
  • the present invention includes methods to reduce dependence on TCS in a patient with moderate-to-severe or severe AD, the methods comprising administering a therapeutically effective amount of an IL-4R inhibitor concomitantly with a potent TCS wherein the amount of TCS used by the patient is reduced by at least 20%, at least 30%, at least 40% or at least 50% as compared to the amount used by the patient before treatment with the IL-4R inhibitor.
  • the administration of an IL-4R inhibitor and a TCS results in additive or synergistic activity in treating AD as compared to monotherapy.
  • TCS topical corticosteroids.
  • group I group II, group III and group IV topical corticosteroids.
  • group II corticosteroids are classified as weak (group I), moderately potent (Group II) and potent (Group III) and very potent (Group IV), based on their activity as compared to hydrocortisone.
  • Group IV TCS very potent are up to 600 times as potent as hydrocortisone and include clobetasol propionate and halcinonide.
  • Group III TCS are 50 to 100 times as potent as hydrocortisone and include, but are not limited to, betamethasone valerate, betamethasone dipropionate, diflucortolone valerate, hydrocortisone-17-butyrate, mometasone furoate, and methylprednisolone aceponate.
  • Group II TCS are 2 to 25 times as potent as hydrocortisone and include, but are not limited to, clobetasone butyrate, and triamcinolone acetonide.
  • Group I TCS includes hydrocortisone.
  • TCS medium-potency or high-potency TCS for treatment of AD.
  • Such treatment may be, for example, for more than 2 months, for more than 3 months, more than 4 months, more than 5 months, or more than 6 months.
  • TCS Treatment with TCS leads to adverse side-effects.
  • the present invention includes methods to reduce use of TCS or dependence on TCS and/or to reduce the adverse side-effects of TCS in a patient with severe AD, the methods comprising administering one or more doses of an IL-4R inhibitor to the patient in need thereof.
  • the IL-4R inhibitor is administered in combination with a medium-potency or high-potency TCS, wherein the amount of TCS administered is gradually reduced such that the patient's severe AD is treated and/or one or more AD-associated parameters is significantly improved as well as the side effects and toxicity due to TCS are minimized or prevented.
  • the present invention includes methods to reduce or eliminate the risk of rebound upon TCS or immunosuppressant reduction or discontinuation, the methods comprising selecting a patient with severe AD that is uncontrolled with a background therapy and administering one or more doses of IL-4R inhibitor to the patient in need thereof.
  • the patient is initially administered one or more doses of IL-4R inhibitor in combination with a concomitantly administered background therapy; followed by gradually reducing the background therapy.
  • the background therapy comprises a therapeutic agent selected from the group consisting of TCS, calcineurin inhibitors, a systemic immunosuppressant and emollients.
  • the patient with severe AD is earlier treated with a systemic immunosuppressant wherein the systemic immunosuppressant is cyclosporine A.
  • the amount of the background therapy is reduced by at least 20%, at least 30%, at 40% or at least 50% as compared to a patient that is not administered an IL-4R inhibitor.
  • the present invention includes methods for treating severe AD by improving one or more atopic dermatitis (AD)-associated parameters in a subject in need thereof, wherein the methods comprise selecting a patient with severe AD, wherein the patient is resistant, inadequately responsive or intolerant to systemic immunosuppressant therapy, and administering a pharmaceutical composition comprising an IL-4R inhibitor to the subject.
  • the pharmaceutical composition comprising an IL-4R inhibitor is administered in combination with a potent TCS.
  • AD-associated parameters include: (a) Investigators Global Assessment (IGA); (b) Body Surface Area Involvement of Atopic Dermatitis (BSA); (c) Eczema Area and Severity Index (EASI); (d) SCORAD; (e) 5-D Pruritus Scale; and (f) Pruritus Numeric Rating Scale (NRS).
  • IGA Investigators Global Assessment
  • BSA Body Surface Area Involvement of Atopic Dermatitis
  • EASI Eczema Area and Severity Index
  • SCORAD SCORAD
  • 5-D Pruritus Scale SCORAD
  • Pruritus Numeric Rating Scale Pruritus Numeric Rating Scale
  • An “improvement in an AD-associated parameter” means a decrease from baseline of one or more of IGA, BSA, EASI, SCORAD, 5-D Pruritus Scale, or NRS.
  • baseline with regard to an AD-associated parameter, means the numerical value of the AD-associated parameter for a subject prior to or at
  • an AD-associated parameter is quantified at baseline and at one or more time points after administration of the pharmaceutical composition of the present invention.
  • an AD-associated parameter may be measured at day 1, day 2, day 3, day 4, day 5, day 6, day 7, day 8, day 9, day 10, day 11, day 12, day 14, day 15, day 22, day 25, day 29, day 36, day 43, day 50, day 57, day 64, day 71, day 85; or at the end of week 1, week 2, week 3, week 4, week 5, week 6, week 7, week 8, week 9, week 10, week 11, week 12, week 13, week 14, week 15, week 16, week 17, week 18, week 19, week 20, week 21, week 22, week 23, week 24, or longer, after the initial treatment with a pharmaceutical composition of the present invention.
  • a subject in need thereof may include, e.g., subjects who, prior to treatment, exhibit (or have exhibited) one or more AD-associated parameters such as, e.g., elevated IGA, BSA, EASI, SCORAD, 5D-Pruritus, and/or NRS score.
  • the methods of the present invention comprise administering an IL-4R inhibitor to patients with IGA ⁇ 3 or ⁇ 4; or BSA more than 10%.
  • CsA cyclosporine A
  • CsA cyclosporine A
  • CsA cyclo
  • the administration of the IL-4R inhibitor leads to an effect selected from the group consisting of: (i) a decrease from baseline of more than 70% in EASI; (ii) a decrease from baseline of about 75% in EASI by Week 2 after administration of the first dose of the IL-4R inhibitor; (iii) a decrease from baseline of more than 50% in pruritus NRS by week 16 after administration of the first dose of the IL-4R inhibitor; (iv) ⁇ 4-point improvement in peak pruritus NRS by week 2 after administration of the first dose of the IL-4R inhibitor; (v) a 2-point improvement in IGA score by week 16 after administration of the first dose of the IL-4R inhibitor; (vi) a decrease from baseline in IGA to achieve an IGA score of 0 or 1 by week 16 after administration of the first dose of the IL-4R inhibitor; (vii) a reduction in the number of flares or exacerbations; and (viii) reduction in the incidence of skin infections; and (vii) improvement
  • the IL-4R inhibitor is an anti-IL-4R antibody or antigen-binding fragment thereof (such as dupilumab).
  • the IL-4R inhibitor is administered in combination with a second therapeutic agent.
  • the second therapeutic agent is selected from the group consisting of topical corticosteroids and topical calcineurin inhibitors.
  • each dose of the IL-4R inhibitor comprises 50-600 mg and each dose is administered one week or 2 weeks after the immediately preceding dose.
  • each dose of the anti-IL-4R antibody comprises 300 mg and wherein each dose is administered once a week or once in 2 weeks.
  • the one or more doses comprise a first dose comprising 600 mg followed by one or more secondary doses wherein each secondary dose comprises 300 mg and wherein each secondary dose is administered 1 week or 2 weeks after the immediately preceding dose.
  • the present invention includes methods for treating AD or for reducing pruritus or for improving an AD-associated parameter in a patient with moderate-to severe or severe AD wherein the patient has been previously treated with an IL-4R inhibitor (e.g., an anti-IL-4R antibody such as dupilumab).
  • an IL-4R inhibitor e.g., an anti-IL-4R antibody such as dupilumab.
  • the patient has been previously treated more than 4 weeks ago, more than 8 weeks ago, more than 12 weeks ago or more than 20 weeks ago with dupilumab.
  • the present invention includes methods to treat moderate-to-severe or severe AD in patients whose prior treatment with an IL-4R inhibitor has been interrupted more than 4 weeks ago, more than 8 weeks ago or more than 12 weeks ago.
  • the methods comprise re-treating the patient in need thereof with an IL-4R inhibitor wherein the retreatment comprises administering one or more doses of the IL-4R inhibitor such that the patient's disease is treated or at least one AD-associated parameter is improved.
  • the retreatment of the patient leads to more than 70% reduction from baseline in EASI score and/or more than 50% reduction from baseline in pruritus NRS score upon administration of the IL-4R inhibitor.
  • the methods of the present invention may be used to treat patients that show elevated levels of one or more AD-associated biomarkers (e.g., IgE).
  • AD-associated biomarkers are described in US Patent Publication No. US20140072583, incorporated herein in its entirety.
  • the methods of the present invention comprise administering an IL-4R inhibitor to patients with elevated levels of IgE or TARC or periostin.
  • a patient in need thereof may include, e.g., subjects who, prior to treatment, exhibit (or have exhibited) an elevated level of one or more AD-associated biomarker such as, e.g., IgE and/or TARC.
  • a subject in need thereof may include a subset of population which is more susceptible to AD or may show an elevated level of an AD-associated biomarker.
  • the methods herein may be used to treat severe AD in children who are ⁇ 1 year old.
  • the present methods may be used to treat infants who are less than 1 month, 1 month, 2 months, 3 months, 4 months, 5 months, 6 months, 7 months, 8 months, 9 months, 10 months, 11 months or less than 12 months old.
  • the present invention includes methods to treat children and/or adolescents who are ⁇ 18 years old.
  • the present methods may be used to treat children or adolescents less than 17 years, 16 years, 15 years, 14 years, 13 years, 12 years, 11 years, 10 years, 9 years, 8 years, 7 years, 6 years, 5 years, 4 years, 3 years, or less than 2 years old.
  • the administration of the IL-4R inhibitor leads to a therapeutic effect selected from the group consisting of: (i) more than 30% reduction from baseline in EASI score by week 2 after administration of the first dose of the IL-4R inhibitor; (ii) more than 50% reduction from baseline in pruritus NRS; and (iii) a reduction from baseline in IGA score to achieve an IGA score of 0 or 1 by week 12 after administration of the first dose of the IL-4R inhibitor.
  • the IL-4R inhibitor is administered in combination with a second therapeutic agent selected from the group consisting of a topical corticosteroid, a topical calcineurin inhibitor, an anti-histamine, an emollient, an anti-bacterial therapeutic, and a therapeutic agent for obstructive airway disease, a lung disorder and/or allergic reaction.
  • a second therapeutic agent selected from the group consisting of a topical corticosteroid, a topical calcineurin inhibitor, an anti-histamine, an emollient, an anti-bacterial therapeutic, and a therapeutic agent for obstructive airway disease, a lung disorder and/or allergic reaction.
  • the methods of the present invention comprise administering to a subject in need thereof a therapeutic composition comprising an interleukin-4 receptor (IL-4R) inhibitor.
  • an “IL-4R inhibitor” (also referred to herein as an “IL-4R inhibitor,” an “IL-4R ⁇ antagonist,” an “IL-4R blocker,” an “IL-4R ⁇ blocker,” etc.) is any agent which binds to or interacts with IL-4R ⁇ or an IL-4R ligand, and inhibits or attenuates the normal biological signaling function a type 1 and/or a type 2 IL-4 receptor.
  • Human IL-4R ⁇ has the amino acid sequence of SEQ ID NO: 11.
  • a type 1 IL-4 receptor is a dimeric receptor comprising an IL-4R ⁇ chain and a ⁇ c chain.
  • a type 2 IL-4 receptor is a dimeric receptor comprising an IL-4R ⁇ chain and an IL-13R ⁇ 1 chain.
  • Type 1 IL-4 receptors interact with and are stimulated by IL-4, while type 2 IL-4 receptors interact with and are stimulated by both IL-4 and IL-13.
  • the IL-4R inhibitors that can be used in the methods of the present invention may function by blocking IL-4-mediated signaling, IL-13-mediated signaling, or both IL-4- and IL-13-mediated signaling.
  • the IL-4R inhibitors of the present invention may thus prevent the interaction of IL-4 and/or IL-13 with a type 1 or type 2 receptor.
  • Non-limiting examples of categories of IL-4R inhibitors include small molecule IL-4R inhibitors, anti-IL-4R aptamers, peptide-based IL-4R inhibitors (e.g., “peptibody” molecules), “receptor-bodies” (e.g., engineered molecules comprising the ligand-binding domain of an IL-4R component), and antibodies or antigen-binding fragments of antibodies that specifically bind human IL-4R ⁇ .
  • IL-4R inhibitors also include antigen-binding proteins that specifically bind IL-4 and/or IL-13.
  • the IL-4R inhibitor is an anti-IL-4R ⁇ antibody or antigen-binding fragment thereof.
  • antibody includes immunoglobulin molecules comprising four polypeptide chains, two heavy (H) chains and two light (L) chains inter-connected by disulfide bonds, as well as multimers thereof (e.g., IgM).
  • each heavy chain comprises a heavy chain variable region (abbreviated herein as HCVR or V H ) and a heavy chain constant region.
  • the heavy chain constant region comprises three domains, C H 1, C H 2 and C H 3.
  • Each light chain comprises a light chain variable region (abbreviated herein as LCVR or V L ) and a light chain constant region.
  • the light chain constant region comprises one domain (C L 1).
  • the V H and V L regions can be further subdivided into regions of hypervariability, termed complementarity determining regions (CDRs), interspersed with regions that are more conserved, termed framework regions (FR).
  • CDRs complementarity determining regions
  • FR framework regions
  • Each V H and V L is composed of three CDRs and four FRs, arranged from amino-terminus to carboxy-terminus in the following order: FR1, CDR1, FR2, CDR2, FR3, CDR3, FR4.
  • the FRs of the anti-IL-4R antibody may be identical to the human germline sequences, or may be naturally or artificially modified.
  • An amino acid consensus sequence may be defined based on a side-by-side analysis of two or more CDRs.
  • antibody also includes antigen-binding fragments of full antibody molecules.
  • antigen-binding portion of an antibody, “antigen-binding fragment” of an antibody, and the like, as used herein, include any naturally occurring, enzymatically obtainable, synthetic, or genetically engineered polypeptide or glycoprotein that specifically binds an antigen to form a complex.
  • Antigen-binding fragments of an antibody may be derived, e.g., from full antibody molecules using any suitable standard techniques such as proteolytic digestion or recombinant genetic engineering techniques involving the manipulation and expression of DNA encoding antibody variable and optionally constant domains.
  • DNA is known and/or is readily available from, e.g., commercial sources, DNA libraries (including, e.g., phage-antibody libraries), or can be synthesized.
  • the DNA may be sequenced and manipulated chemically or by using molecular biology techniques, for example, to arrange one or more variable and/or constant domains into a suitable configuration, or to introduce codons, create cysteine residues, modify, add or delete amino acids, etc.
  • Non-limiting examples of antigen-binding fragments include: (i) Fab fragments; (ii) F(ab′)2 fragments; (iii) Fd fragments; (iv) Fv fragments; (v) single-chain Fv (scFv) molecules; (vi) dAb fragments; and (vii) minimal recognition units consisting of the amino acid residues that mimic the hypervariable region of an antibody (e.g., an isolated complementarity determining region (CDR) such as a CDR3 peptide), or a constrained FR3-CDR3-FR4 peptide.
  • CDR complementarity determining region
  • engineered molecules such as domain-specific antibodies, single domain antibodies, domain-deleted antibodies, chimeric antibodies, CDR-grafted antibodies, diabodies, triabodies, tetrabodies, minibodies, nanobodies (e.g. monovalent nanobodies, bivalent nanobodies, etc.), small modular immunopharmaceuticals (SMIPs), and shark variable IgNAR domains, are also encompassed within the expression “antigen-binding fragment,” as used herein.
  • SMIPs small modular immunopharmaceuticals
  • an antigen-binding fragment of an antibody will typically comprise at least one variable domain.
  • the variable domain may be of any size or amino acid composition and will generally comprise at least one CDR which is adjacent to or in frame with one or more framework sequences.
  • the V H and V L domains may be situated relative to one another in any suitable arrangement.
  • the variable region may be dimeric and contain V H -V H , V H -V L or V L -V L dimers.
  • the antigen-binding fragment of an antibody may contain a monomeric V H or V L domain.
  • an antigen-binding fragment of an antibody may contain at least one variable domain covalently linked to at least one constant domain.
  • variable and constant domains that may be found within an antigen-binding fragment of an antibody of the present invention include: (i) V H -C H 1; (ii) V H -C H 2; (iii) V H -C H 3; (iv) V H -C H 1-C H 2; (v) V H -C H 1-C H 2-C H 3; (vi) V H -C H 2-C H 3; (vii) V H -C L ; (viii) V L -C H 1; (ix) V L -C H 2; (x) V L -C H 3; (xi) V L -C H 1-C H 2; (xii) V L -C H 1-C H 2-C H 3; (xiii) V L -C H 2-C H 3; and (xiv) V L
  • variable and constant domains may be either directly linked to one another or may be linked by a full or partial hinge or linker region.
  • a hinge region may consist of at least 2 (e.g., 5, 10, 15, 20, 40, 60 or more) amino acids which result in a flexible or semi-flexible linkage between adjacent variable and/or constant domains in a single polypeptide molecule.
  • an antigen-binding fragment of an antibody of the present invention may comprise a homo-dimer or hetero-dimer (or other multimer) of any of the variable and constant domain configurations listed above in non-covalent association with one another and/or with one or more monomeric V H or V L domain (e.g., by disulfide bond(s)).
  • antibody also includes multispecific (e.g., bispecific) antibodies.
  • a multispecific antibody or antigen-binding fragment of an antibody will typically comprise at least two different variable domains, wherein each variable domain is capable of specifically binding to a separate antigen or to a different epitope on the same antigen.
  • Any multispecific antibody format may be adapted for use in the context of an antibody or antigen-binding fragment of an antibody of the present invention using routine techniques available in the art.
  • the present invention includes methods comprising the use of bispecific antibodies wherein one arm of an immunoglobulin is specific for IL-4R ⁇ or a fragment thereof, and the other arm of the immunoglobulin is specific for a second therapeutic target or is conjugated to a therapeutic moiety.
  • the antibodies used in the methods of the present invention may be human antibodies.
  • the term “human antibody,” as used herein, is intended to include antibodies having variable and constant regions derived from human germline immunoglobulin sequences.
  • the human antibodies of the invention may nonetheless include amino acid residues not encoded by human germline immunoglobulin sequences (e.g., mutations introduced by random or site-specific mutagenesis in vitro or by somatic mutation in vivo), for example in the CDRs and in particular CDR3.
  • the term “human antibody,” as used herein is not intended to include antibodies in which CDR sequences derived from the germline of another mammalian species, such as a mouse, have been grafted onto human framework sequences.
  • the antibodies used in the methods of the present invention may be recombinant human antibodies.
  • the term “recombinant human antibody,” as used herein, is intended to include all human antibodies that are prepared, expressed, created or isolated by recombinant means, such as antibodies expressed using a recombinant expression vector transfected into a host cell (described further below), antibodies isolated from a recombinant, combinatorial human antibody library (described further below), antibodies isolated from an animal (e.g., a mouse) that is transgenic for human immunoglobulin genes (see e.g., Taylor et al. (1992) Nucl. Acids Res.
  • the antibodies used in the methods of the present invention specifically bind IL-4R ⁇ .
  • the term “specifically binds,” or the like, means that an antibody or antigen-binding fragment thereof forms a complex with an antigen that is relatively stable under physiologic conditions. Methods for determining whether an antibody specifically binds to an antigen are well known in the art and include, for example, equilibrium dialysis, surface plasmon resonance, and the like.
  • an antibody that “specifically binds” IL-4R ⁇ includes antibodies that bind IL-4R ⁇ or portion thereof with a K D of less than about 1000 nM, less than about 500 nM, less than about 300 nM, less than about 200 nM, less than about 100 nM, less than about 90 nM, less than about 80 nM, less than about 70 nM, less than about 60 nM, less than about 50 nM, less than about 40 nM, less than about 30 nM, less than about 20 nM, less than about 10 nM, less than about 5 nM, less than about 1 nM, less than about 0.5 nM, less than about 0.25 nM, less than about 0.1 nM or less than about 0.05 nM, as measured in a surface plasmon resonance assay.
  • An isolated antibody that specifically binds human IL-4R ⁇ may, however, have cross-reactivity to other antigens, such
  • the IL-4R inhibitor is an anti-IL-4R ⁇ antibody, or antigen-binding fragment thereof comprising a heavy chain variable region (HCVR), light chain variable region (LCVR), and/or complementarity determining regions (CDRs) comprising any of the amino acid sequences of the anti-IL-4R antibodies as set forth in U.S. Pat. No. 7,608,693.
  • HCVR heavy chain variable region
  • LCVR light chain variable region
  • CDRs complementarity determining regions
  • the anti-IL-4R ⁇ antibody or antigen-binding fragment thereof that can be used in the context of the methods of the present invention comprises the heavy chain complementarity determining regions (HCDRs) of a heavy chain variable region (HCVR) comprising the amino acid sequence of SEQ ID NO: 1 and the light chain complementarity determining regions (LCDRs) of a light chain variable region (LCVR) comprising the amino acid sequence of SEQ ID NO: 2.
  • the anti-IL-4R ⁇ antibody or antigen-binding fragment thereof comprises three HCDRs (HCDR1, HCDR2 and HCDR3) and three LCDRs (LCDR1, LCDR2 and LCDR3), wherein the HCDR1 comprises the amino acid sequence of SEQ ID NO: 3; the HCDR2 comprises the amino acid sequence of SEQ ID NO: 4; the HCDR3 comprises the amino acid sequence of SEQ ID NO: 5; the LCDR1 comprises the amino acid sequence of SEQ ID NO: 6; the LCDR2 comprises the amino acid sequence of SEQ ID NO: 7; and the LCDR3 comprises the amino acid sequence of SEQ ID NO: 8.
  • the anti-IL-4R antibody or antigen-binding fragment thereof comprises an HCVR comprising SEQ ID NO: 1 and an LCVR comprising SEQ ID NO: 2.
  • the methods of the present invention comprise the use of the anti-IL-4R antibody comprising HCDR1-HCDR2-HCDR3-LCDR1-LCDR2-LCDR3 amino acid sequences of SEQ ID NOs: 3-4-5-6-7-8, or a bioequivalent thereof.
  • the methods of the present invention comprise the use of an anti-IL-4R antibody, wherein the antibody comprises a heavy chain comprising the amino acid sequence of SEQ ID NO: 9.
  • the anti-IL-4R antibody comprises a light chain comprising the amino acid sequence of SEQ ID NO: 10.
  • An exemplary antibody comprising a heavy chain comprising the amino acid sequence of SEQ ID NO: 9 and a light chain comprising the amino acid sequence of SEQ ID NO: 10 is the fully human anti-IL-4R antibody referred to and known in the art as “dupilumab”.
  • the methods of the present invention comprise the use of dupilumab, or a bioequivalent thereof.
  • bioequivalent refers to anti-IL-4R antibodies or IL-4R-binding proteins or fragments thereof that are pharmaceutical equivalents or pharmaceutical alternatives whose rate and/or extent of absorption do not show a significant difference with that of dupilumab when administered at the same molar dose under similar experimental conditions, either single dose or multiple dose.
  • the term refers to antigen-binding proteins that bind to IL-4R which do not have clinically meaningful differences with dupilumab in their safety, purity and/or potency.
  • the anti-IL-4R ⁇ antibodies used in the context of the methods of the present invention may have pH-dependent binding characteristics.
  • an anti-IL-4R ⁇ antibody for use in the methods of the present invention may exhibit reduced binding to IL-4R ⁇ at acidic pH as compared to neutral pH.
  • an anti-IL-4R ⁇ antibody of the invention may exhibit enhanced binding to its antigen at acidic pH as compared to neutral pH.
  • the expression “acidic pH” includes pH values less than about 6.2, e.g., about 6.0, 5.95, 5.9, 5.85, 5.8, 5.75, 5.7, 5.65, 5.6, 5.55, 5.5, 5.45, 5.4, 5.35, 5.3, 5.25, 5.2, 5.15, 5.1, 5.05, 5.0, or less.
  • neutral pH means a pH of about 7.0 to about 7.4.
  • the expression “neutral pH” includes pH values of about 7.0, 7.05, 7.1, 7.15, 7.2, 7.25, 7.3, 7.35, and 7.4.
  • “reduced binding to IL-4R ⁇ at acidic pH as compared to neutral pH” is expressed in terms of a ratio of the K D value of the antibody binding to IL-4R ⁇ at acidic pH to the K D value of the antibody binding to IL-4R ⁇ at neutral pH (or vice versa).
  • an antibody or antigen-binding fragment thereof may be regarded as exhibiting “reduced binding to IL-4R ⁇ at acidic pH as compared to neutral pH” for purposes of the present invention if the antibody or antigen-binding fragment thereof exhibits an acidic/neutral K D ratio of about 3.0 or greater.
  • the acidic/neutral K D ratio for an antibody or antigen-binding fragment of the present invention can be about 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0, 10.5, 11.0, 11.5, 12.0, 12.5, 13.0, 13.5, 14.0, 14.5, 15.0, 20.0, 25.0, 30.0, 40.0, 50.0, 60.0, 70.0, 100.0, or greater.
  • Antibodies with pH-dependent binding characteristics may be obtained, e.g., by screening a population of antibodies for reduced (or enhanced) binding to a particular antigen at acidic pH as compared to neutral pH. Additionally, modifications of the antigen-binding domain at the amino acid level may yield antibodies with pH-dependent characteristics. For example, by substituting one or more amino acids of an antigen-binding domain (e.g., within a CDR) with a histidine residue, an antibody with reduced antigen-binding at acidic pH relative to neutral pH may be obtained.
  • the expression “acidic pH” means a pH of 6.0 or less.
  • the present invention includes methods which comprise administering an IL-4R inhibitor to a patient, wherein the IL-4R inhibitor is contained within a pharmaceutical composition.
  • the pharmaceutical compositions of the invention are formulated with suitable carriers, excipients, and other agents that provide suitable transfer, delivery, tolerance, and the like. A multitude of appropriate formulations can be found in the formulary known to all pharmaceutical chemists: Remington's Pharmaceutical Sciences, Mack Publishing Company, Easton, Pa.
  • formulations include, for example, powders, pastes, ointments, jellies, waxes, oils, lipids, lipid (cationic or anionic) containing vesicles (such as LIPOFECTINTM), DNA conjugates, anhydrous absorption pastes, oil-in-water and water-in-oil emulsions, emulsions carbowax (polyethylene glycols of various molecular weights), semi-solid gels, and semi-solid mixtures containing carbowax. See also Powell et al. “Compendium of excipients for parenteral formulations” PDA (1998) J Pharm Sci Technol 52:238-311.
  • the dose of antibody administered to a patient according to the methods of the present invention may vary depending upon the age and the size of the patient, symptoms, conditions, route of administration, and the like.
  • the dose is typically calculated according to body weight or body surface area.
  • Effective dosages and schedules for administering pharmaceutical compositions comprising anti-IL-4R antibodies may be determined empirically; for example, patient progress can be monitored by periodic assessment, and the dose adjusted accordingly.
  • interspecies scaling of dosages can be performed using well-known methods in the art (e.g., Mordenti et al., 1991 , Pharmaceut. Res. 8:1351).
  • Specific exemplary doses of anti-IL4R antibodies and administration regimens involving the same that can be used in the context of the present invention are disclosed elsewhere herein.
  • IL-4R inhibitor e.g., encapsulation in liposomes, microparticles, microcapsules, recombinant cells capable of expressing the mutant viruses, receptor mediated endocytosis (see, e.g., Wu et al., 1987, J. Biol. Chem. 262:4429-4432).
  • Methods of administration include, but are not limited to, intradermal, intramuscular, intraperitoneal, intravenous, subcutaneous, intranasal, epidural, and oral routes.
  • composition may be administered by any convenient route, for example by infusion or bolus injection, by absorption through epithelial or mucocutaneous linings (e.g., oral mucosa, rectal and intestinal mucosa, etc.) and may be administered together with other biologically active agents.
  • infusion or bolus injection by absorption through epithelial or mucocutaneous linings (e.g., oral mucosa, rectal and intestinal mucosa, etc.) and may be administered together with other biologically active agents.
  • epithelial or mucocutaneous linings e.g., oral mucosa, rectal and intestinal mucosa, etc.
  • a pharmaceutical composition of the present invention can be delivered subcutaneously or intravenously with a standard needle and syringe.
  • a pen delivery device readily has applications in delivering a pharmaceutical composition of the present invention.
  • Such a pen delivery device can be reusable or disposable.
  • a reusable pen delivery device generally utilizes a replaceable cartridge that contains a pharmaceutical composition. Once all of the pharmaceutical composition within the cartridge has been administered and the cartridge is empty, the empty cartridge can readily be discarded and replaced with a new cartridge that contains the pharmaceutical composition. The pen delivery device can then be reused.
  • a disposable pen delivery device there is no replaceable cartridge. Rather, the disposable pen delivery device comes prefilled with the pharmaceutical composition held in a reservoir within the device. Once the reservoir is emptied of the pharmaceutical composition, the entire device is discarded.
  • Numerous reusable pen and autoinjector delivery devices have applications in the subcutaneous delivery of a pharmaceutical composition of the present invention.
  • Examples include, but are not limited to AUTOPENTM (Owen Mumford, Inc., Woodstock, UK), DISETRONICTM pen (Disetronic Medical Systems, Bergdorf, Switzerland), HUMALOG MIX 75/25TM pen, HUMALOGTM pen, HUMALIN 70/30TM pen (Eli Lilly and Co., Indianapolis, Ind.), NOVOPENTM I, II and III (Novo Nordisk, Copenhagen, Denmark), NOVOPEN JUNIORTM (Novo Nordisk, Copenhagen, Denmark), BDTM pen (Becton Dickinson, Franklin Lakes, N.J.), OPTIPENTM, OPTIPEN PROTM, OPTIPEN STARLETTM, and OPTICLIKTM (Sanofi-Aventis, Frankfurt, Germany), to name only a few.
  • Examples of disposable pen delivery devices having applications in subcutaneous delivery of a pharmaceutical composition of the present invention include, but are not limited to the SOLOSTARTM pen (Sanofi-Aventis), the FLEXPENTM (Novo Nordisk), and the KWIKPENTM (Eli Lilly), the SURECLICKTM Autoinjector (Amgen, Thousand Oaks, Calif.), the PENLETTM (Haselmeier, Stuttgart, Germany), the EPIPEN (Dey, L. P.), and the HUMIRATM Pen (Abbott Labs, Abbott Park Ill.), to name only a few.
  • SOLOSTARTM pen Sanofi-Aventis
  • the FLEXPENTM Novo Nordisk
  • KWIKPENTM Eli Lilly
  • SURECLICKTM Autoinjector Amgen, Thousand Oaks, Calif.
  • the PENLETTM Heaselmeier, Stuttgart, Germany
  • EPIPEN Dey, L. P.
  • HUMIRATM Pen Abbott Labs, Abbott Park Ill.
  • the pharmaceutical composition can be delivered in a controlled release system.
  • a pump may be used (see Langer, supra; Sefton, 1987, CRC Crit. Ref. Biomed. Eng. 14:201).
  • polymeric materials can be used; see, Medical Applications of Controlled Release, Langer and Wise (eds.), 1974, CRC Pres., Boca Raton, Fla.
  • a controlled release system can be placed in proximity of the composition's target, thus requiring only a fraction of the systemic dose (see, e.g., Goodson, 1984, in Medical Applications of Controlled Release, supra, vol. 2, pp. 115-138). Other controlled release systems are discussed in the review by Langer, 1990, Science 249:1527-1533.
  • the injectable preparations may include dosage forms for intravenous, subcutaneous, intracutaneous and intramuscular injections, drip infusions, etc. These injectable preparations may be prepared by known methods. For example, the injectable preparations may be prepared, e.g., by dissolving, suspending or emulsifying the antibody or its salt described above in a sterile aqueous medium or an oily medium conventionally used for injections.
  • aqueous medium for injections there are, for example, physiological saline, an isotonic solution containing glucose and other auxiliary agents, etc., which may be used in combination with an appropriate solubilizing agent such as an alcohol (e.g., ethanol), a polyalcohol (e.g., propylene glycol, polyethylene glycol), a nonionic surfactant [e.g., polysorbate 80, HCO-50 (polyoxyethylene (50 mol) adduct of hydrogenated castor oil)], etc.
  • an alcohol e.g., ethanol
  • a polyalcohol e.g., propylene glycol, polyethylene glycol
  • a nonionic surfactant e.g., polysorbate 80, HCO-50 (polyoxyethylene (50 mol) adduct of hydrogenated castor oil
  • oily medium there are employed, e.g., sesame oil, soybean oil, etc., which may be used in combination with a solubilizing agent such as benzyl benzoate, benzyl alcohol, etc.
  • a solubilizing agent such as benzyl benzoate, benzyl alcohol, etc.
  • the pharmaceutical compositions for oral or parenteral use described above are prepared into dosage forms in a unit dose suited to fit a dose of the active ingredients.
  • dosage forms in a unit dose include, for example, tablets, pills, capsules, injections (ampoules), suppositories, etc.
  • compositions comprising an anti-IL-4R antibody that can be used in the context of the present invention are disclosed in, e.g., U.S. Pat. No. 8,945,559.
  • the present invention includes methods comprising administering to a subject an IL-4R inhibitor at a dosing frequency of about four times a week, twice a week, once a week, once every two weeks, once every three weeks, once every four weeks, once every five weeks, once every six weeks, once every eight weeks, once every twelve weeks, or less frequently so long as a therapeutic response is achieved.
  • a dosing frequency of about four times a week, twice a week, once a week, once every two weeks, once every three weeks, once every four weeks, once every five weeks, once every six weeks, once every eight weeks, once every twelve weeks, or less frequently so long as a therapeutic response is achieved.
  • a dosing frequency of about four times a week, twice a week, once a week, once every two weeks, once every three weeks, once every four weeks, once every five weeks, once every six weeks, once every eight weeks, once every twelve weeks, or less frequently so long as a therapeutic response is achieved.
  • multiple doses of an IL-4R inhibitor may be administered to a subject over a defined time course.
  • the methods according to this aspect of the invention comprise sequentially administering to a subject multiple doses of an IL-4R inhibitor.
  • sequentially administering means that each dose of IL-4R inhibitor is administered to the subject at a different point in time, e.g., on different days separated by a predetermined interval (e.g., hours, days, weeks or months).
  • the present invention includes methods which comprise sequentially administering to the patient a single initial dose of an IL-4R inhibitor, followed by one or more secondary doses of the IL-4R inhibitor, and optionally followed by one or more tertiary doses of the IL-4R inhibitor.
  • the terms “initial dose,” “secondary doses,” and “tertiary doses,” refer to the temporal sequence of administration of the IL-4R inhibitor.
  • the “initial dose” is the dose which is administered at the beginning of the treatment regimen (also referred to as the “baseline dose”);
  • the “secondary doses” are the doses which are administered after the initial dose;
  • the “tertiary doses” are the doses which are administered after the secondary doses.
  • the initial, secondary, and tertiary doses may all contain the same amount of IL-4R inhibitor, but generally may differ from one another in terms of frequency of administration.
  • the amount of IL-4R inhibitor contained in the initial, secondary and/or tertiary doses varies from one another (e.g., adjusted up or down as appropriate) during the course of treatment.
  • the initial dose comprises a first amount of the antibody or antigen-binding fragment thereof and the one or more secondary doses each comprise a second amount of the antibody or antigen-binding fragment thereof.
  • the first amount of antibody or fragment thereof is 1.5 ⁇ , 2 ⁇ , 2.5 ⁇ , 3 ⁇ , 3.5 ⁇ , 4 ⁇ , or 5 ⁇ the second amount of the antibody or antigen-binding fragment thereof.
  • one or more (e.g., 1, 2, 3, 4, or 5) doses are administered at the beginning of the treatment regimen as “loading doses” followed by subsequent doses that are administered on a less frequent basis (e.g., “maintenance doses”).
  • an IL-4R inhibitor may be administered to a patient in need thereof at a loading dose of about 300 mg or about 600 mg followed by one or more maintenance doses of about 25 mg to about 400 mg.
  • the initial dose and the one or more secondary doses each include 10 mg to 600 mg of the IL-4R inhibitor, e.g., 100 mg to 400 mg of the IL-4R inhibitor, e.g., 10 mg, 25 mg, 50 mg, 100 mg, 150 mg, 200 mg, 250 mg, 300 mg, 400 mg or 500 mg of the IL-4R inhibitor.
  • each secondary and/or tertiary dose is administered 1 to 14 (e.g., 1, 11 ⁇ 2, 2, 21 ⁇ 2, 3, 31 ⁇ 2, 4, 41 ⁇ 2, 5, 51 ⁇ 2, 6, 61 ⁇ 2, 7, 71 ⁇ 2, 8, 81 ⁇ 2, 9, 91 ⁇ 2, 10, 101 ⁇ 2, 11, 111 ⁇ 2, 12, 121 ⁇ 2, 13, 131 ⁇ 2, 14, 141 ⁇ 2, or more) weeks after the immediately preceding dose.
  • the phrase “the immediately preceding dose,” as used herein, means, in a sequence of multiple administrations, the dose of IL-4R inhibitor which is administered to a patient prior to the administration of the very next dose in the sequence with no intervening doses.
  • the methods according to this aspect of the invention may comprise administering to a patient any number of secondary and/or tertiary doses of an IL-4R inhibitor.
  • any number of secondary and/or tertiary doses of an IL-4R inhibitor may comprise administering to a patient any number of secondary and/or tertiary doses of an IL-4R inhibitor.
  • only a single secondary dose is administered to the patient.
  • two or more (e.g., 2, 3, 4, 5, 6, 7, 8, or more) secondary doses are administered to the patient.
  • only a single tertiary dose is administered to the patient.
  • two or more (e.g., 2, 3, 4, 5, 6, 7, 8, or more) tertiary doses are administered to the patient.
  • each secondary dose may be administered at the same frequency as the other secondary doses. For example, each secondary dose may be administered to the patient 1 to 6 weeks after the immediately preceding dose.
  • each tertiary dose may be administered at the same frequency as the other tertiary doses. For example, each tertiary dose may be administered to the patient 2 to 4 weeks after the immediately preceding dose.
  • the frequency at which the secondary and/or tertiary doses are administered to a patient can vary over the course of the regimen.
  • the methods of the present invention comprise administering to the subject a topical corticosteroid (TCS) in combination with an IL-4R inhibitor (e.g., an anti-IL-4R antibody).
  • TCS topical corticosteroid
  • an IL-4R inhibitor e.g., an anti-IL-4R antibody
  • the expression “in combination with” means that the TCS is administered before, after, or concurrent with the IL-4R inhibitor.
  • the term “in combination with” also includes sequential or concomitant administration of IL-4R inhibitor and TCS.
  • the TCS when administered “before” the IL-4R inhibitor, may be administered more than 72 hours, about 72 hours, about 60 hours, about 48 hours, about 36 hours, about 24 hours, about 12 hours, about 10 hours, about 8 hours, about 6 hours, about 4 hours, about 2 hours, about 1 hour, about 30 minutes, about 15 minutes or about 10 minutes prior to the administration of the IL-4R inhibitor.
  • the TCS may be administered about 10 minutes, about 15 minutes, about 30 minutes, about 1 hour, about 2 hours, about 4 hours, about 6 hours, about 8 hours, about 10 hours, about 12 hours, about 24 hours, about 36 hours, about 48 hours, about 60 hours, about 72 hours, or more than 72 hours after the administration of the IL-4R inhibitor.
  • Administration “concurrent” with the IL-4R inhibitor means that the TCS is administered to the subject in a separate dosage form within less than 5 minutes (before, after, or at the same time) of administration of the IL-4R inhibitor, or administered to the subject as a single combined dosage formulation comprising both the TCS and the IL-4R inhibitor.
  • the amount of IL-4R inhibitor (e.g., anti-IL-4R antibody) administered to a subject according to the methods of the present invention is, generally, a therapeutically effective amount.
  • therapeutically effective amount means an amount of IL-4R inhibitor that results in one or more of: (a) an improvement in one or more AD-associated parameters (as mentioned elsewhere herein); and/or (b) a detectable improvement in one or more symptoms or indicia of atopic dermatitis.
  • a “therapeutically effective amount” includes an amount of IL-4R inhibitor that results in one or more of: (a) at least 70% decrease from baseline in EASI; (b) reduction in pruritus by at least 30%; (c) a decrease from the baseline of points in IGA; (d) a decrease from the baseline of ⁇ 4 points in NRS; (e) a decrease in skin colonization of Staphylococcus aureus ; (f) a reduction in the level of an AD-associated biomarker such as IgE or TARC; (g) reduction in the use of TCS by at least 20%; and/or (h) a reduction in the number of flares or AD exacerbations.
  • an immunologically effective amount can be from about 0.05 mg to about 600 mg, e.g., about 0.05 mg, about 0.1 mg, about 1.0 mg, about 1.5 mg, about 2.0 mg, about 10 mg, about 20 mg, about 30 mg, about 40 mg, about 50 mg, about 60 mg, about 70 mg, about 80 mg, about 90 mg, about 100 mg, about 110 mg, about 120 mg, about 130 mg, about 140 mg, about 150 mg, about 160 mg, about 170 mg, about 180 mg, about 190 mg, about 200 mg, about 210 mg, about 220 mg, about 230 mg, about 240 mg, about 250 mg, about 260 mg, about 270 mg, about 280 mg, about 290 mg, about 300 mg, about 310 mg, about 320 mg, about 330 mg, about 340 mg, about 350 mg, about 360 mg, about 370 mg, about 380 mg, about 390 mg, about 400 mg, about 410 mg, about 420 mg, about 430 mg, about 440 mg,
  • the amount of IL-4R inhibitor contained within the individual doses may be expressed in terms of milligrams of antibody per kilogram of subject body weight (i.e., mg/kg).
  • the IL-4R inhibitor may be administered to a subject at a dose of about 0.0001 to about 100 mg/kg of subject body weight.
  • the present invention includes a method of treating severe atopic dermatitis (AD), the method comprising: (a) selecting a patient with severe AD, wherein the patient is resistant, inadequately responsive or intolerant to systemic immunosuppressant therapy and/or when said therapy is inadvisable; and (b) administering one or more doses of an interleukin 4 receptor (IL-4R) inhibitor to the patient in need thereof.
  • AD severe atopic dermatitis
  • the present invention includes the method of embodiment 1, wherein the therapy is inadvisable due to safety and health risks to the patient coupled with suboptimal efficacy.
  • the present invention includes the method of embodiment 1 or 2, wherein the systemic immunosuppressant is selected from the group consisting of cyclosporine A, methotrexate, mycophenolate mofetil, azathioprine, systemic corticosteroids, and interferon-gamma.
  • the systemic immunosuppressant is selected from the group consisting of cyclosporine A, methotrexate, mycophenolate mofetil, azathioprine, systemic corticosteroids, and interferon-gamma.
  • the present invention includes the method of embodiment 3, wherein the systemic immunosuppressant is cyclosporine A (CSA).
  • the systemic immunosuppressant is cyclosporine A (CSA).
  • the present invention includes the method of embodiment 4, wherein the patient has no prior exposure to CSA and CSA therapy is inadvisable due to a condition selected from the group consisting of medical contraindications, hypersensitivity to CSA or excipients, use of a concomitant medication prohibited with CSA, increased susceptibility to CSA-induced renal damage, increased susceptibility to CSA-induced liver damage, and increased risk of serious infections.
  • the present invention includes the method of embodiment 4, wherein the patient is previously exposed to CSA and CSA therapy is inadvisable due to a condition selected from the group consisting of intolerance, unacceptable toxicity, inadequate response, requirement for CSA at a dose >5 mg/kg/day of the patient's body weight, and requirement of CSA administration for a duration >1 year.
  • the present invention includes the method of any one of embodiments 1-3, wherein the patient has been previously treated with a therapeutic agent selected from the group consisting of cyclosporine A, an IgE inhibitor, a TNFalpha inhibitor, a CD11a inhibitor, a CD20 inhibitor, an antibiotic, a topical corticosteroid, an oral corticosteroid, a calcineurin inhibitor and phototherapy.
  • a therapeutic agent selected from the group consisting of cyclosporine A, an IgE inhibitor, a TNFalpha inhibitor, a CD11a inhibitor, a CD20 inhibitor, an antibiotic, a topical corticosteroid, an oral corticosteroid, a calcineurin inhibitor and phototherapy.
  • the present invention includes a method of treating or reducing pruritus comprising: (a) selecting a patient with severe AD wherein the patient is resistant, inadequately responsive or intolerant to systemic immunosuppressant therapy; and (b) administering one or more doses of an IL-4R inhibitor to the patient in need thereof.
  • the present invention includes the method of embodiment 8, wherein the systemic immunosuppressant is selected from the group consisting of cyclosporine A, methotrexate, mycophenolate mofetil, azathioprine, systemic corticosteroids, and interferon-gamma.
  • the systemic immunosuppressant is selected from the group consisting of cyclosporine A, methotrexate, mycophenolate mofetil, azathioprine, systemic corticosteroids, and interferon-gamma.
  • the present invention includes the method of embodiment 8 or 9, wherein the systemic immunosuppressant is cyclosporine A (CSA).
  • the systemic immunosuppressant is cyclosporine A (CSA).
  • the present invention includes the method of any one of embodiments 8-10, wherein the patient has severe AD.
  • the present invention includes the method of any one of embodiments 8-11, wherein administration of the IL-4R inhibitor leads to reduction from the baseline of at least 30% in pruritus in the patient.
  • the present invention includes a method of treating severe AD, the method comprising: (a) selecting a patient with severe AD, wherein the patient has been previously treated with a therapeutic selected from the group consisting of cyclosporine A, an IgE inhibitor, a TNFalpha inhibitor, a CD11a inhibitor, a CD20 inhibitor, an antibiotic, an IL-4R inhibitor, dupilumab, a systemic immunosuppressant, a topical corticosteroid, an oral corticosteroid, a calcineurin inhibitor and phototherapy; and (b) administering one or more doses of an IL-4R inhibitor to the patient in need thereof.
  • the present invention includes the method of embodiment 13, wherein the patient is resistant, inadequately responsive or intolerant to the therapeutic.
  • the present invention includes the method of embodiment 13 or 14, wherein the therapy is inadvisable due to safety and health risks to the patient coupled with suboptimal efficacy.
  • the present invention includes the method of any one of embodiments 1-15, wherein the one or more doses comprise 50-600 mg of the IL-4R inhibitor.
  • the present invention includes the method of any one of embodiments 1-15, wherein the one or more doses comprise 300 mg of the IL-4R inhibitor.
  • the present invention includes the method of embodiment 16 or 17, wherein one or more doses of the IL-4R inhibitor are administered once a week, once in 2 weeks, once in 3 weeks, or once in 4 weeks.
  • the present invention includes the method of any one of embodiments 1-15, wherein the IL-4R inhibitor is administered at an initial dose followed by one or more secondary doses.
  • the present invention includes the method of embodiment 19, wherein the initial dose comprises 50-600 mg of the IL-4R inhibitor and each secondary dose comprises 25-400 mg of the IL-4R inhibitor.
  • the present invention includes the method of embodiment 20, wherein the initial dose comprises 600 mg of the IL-4R inhibitor and each secondary dose comprises 300 mg of the IL-4R inhibitor.
  • the present invention includes the method of embodiment 19 or 20, wherein each secondary dose is administered one week after the immediately preceding dose.
  • the present invention includes the method of embodiment 19 or 20, wherein each secondary dose is administered 2 weeks after the immediately preceding dose.
  • the present invention includes the method of any of any one of embodiments 1-23, wherein administration of the IL-4R inhibitor results in an improvement in at least one AD-related parameter selected from the group consisting of: (a) a decrease from baseline in Eczema Area and Severity Index (EASI) score of at least 75%; (b) a decrease from baseline in Pruritus Numeric Rating Scale (NRS) score of at least 30%; (c) a decrease from baseline in Body Surface Area Involvement of Atopic Dermatitis (BSA) score of at least 25%; (d) a decrease from baseline in Investigator's Global Assessment (IGA) score of points; and (e) a decrease from baseline in NRS score of ⁇ 3 points.
  • EASI Eczema Area and Severity Index
  • NRS Pruritus Numeric Rating Scale
  • BSA Body Surface Area Involvement of Atopic Dermatitis
  • IGA Investigator's Global Assessment
  • the present invention includes the method of any of any one of embodiments 1-24, wherein administration of the IL-4R inhibitor results in an improvement in at least one patient related outcome selected from the group consisting of Global Individual Signs Score (GISS), Patient Oriented Eczema Measure (POEM), Patient-assessed Hospital Anxiety and Depression Scale (HADS) and Patient-reported Dermatology Life Quality Index (DLQI).
  • GISS Global Individual Signs Score
  • POEM Patient Oriented Eczema Measure
  • HADS Patient-assessed Hospital Anxiety and Depression Scale
  • DLQI Patient-reported Dermatology Life Quality Index
  • the present invention includes the method of any one of embodiments 1-25, wherein administration of the IL-4R inhibitor results in a decrease in the number of flares or exacerbations in the patient.
  • the present invention includes the method of any of any one of embodiments 1-26, wherein the IL-4R inhibitor is administered subcutaneously.
  • the present invention includes the method of any one of embodiments 1-27, wherein the IL-4R inhibitor is administered concomitantly with a second therapeutic agent.
  • the present invention includes the method of embodiment 28, wherein the second therapeutic agent is selected from the group consisting of topical corticosteroids, calcineurin inhibitors, and emollients.
  • the present invention includes the method of embodiment 29, wherein the topical corticosteroid is selected from the group consisting of low-potency TCS, medium-potency TCS and high-potency TCS.
  • the present invention includes the method of embodiment 30, wherein the amount of topical corticosteroids used by the patient is gradually reduced following administration of the first dose of the IL-4R inhibitor.
  • the present invention includes the method of embodiment 31, wherein the amount of topical corticosteroids used by the patient is reduced by least about 20% in 4 weeks following administration of the first dose of the IL-4R inhibitor.
  • the present invention includes the method of embodiment 31 or 32, wherein the amount of topical corticosteroids used by the patient is reduced by about 50% in 4 weeks following administration of the first dose of the IL-4R inhibitor.
  • the present invention includes the method of any one of embodiments 1-33, wherein the IL-4R inhibitor is an antibody or antigen-binding fragment thereof that binds IL-4R ⁇ and prevents the interaction of IL-4 and/or IL-13 with a type 1 or type 2 IL-4 receptor.
  • the IL-4R inhibitor is an antibody or antigen-binding fragment thereof that binds IL-4R ⁇ and prevents the interaction of IL-4 and/or IL-13 with a type 1 or type 2 IL-4 receptor.
  • the present invention includes the method of embodiment 34, wherein the antibody or antigen-binding fragment thereof prevents the interaction of IL-4 and IL-13 with both type 1 and type 2 IL-4 receptors.
  • the present invention includes the method of embodiment 34 or 35, wherein the antibody or antigen-binding fragment thereof comprises the heavy chain complementarity determining regions (HCDRs) of a heavy chain variable region (HCVR) comprising the amino acid sequence of SEQ ID NO: 1 and the light chain complementarity determining regions (LCDRs) of a light chain variable region (LCVR) comprising the amino acid sequence of SEQ ID NO: 2.
  • HCDRs heavy chain complementarity determining regions
  • LCDRs light chain complementarity determining regions of a light chain variable region
  • the present invention includes the method of embodiment 34 or 35, wherein the antibody or antigen-binding fragment thereof comprises three HCDRs (HCDR1, HCDR2 and HCDR3) and three LCDRs (LCDR1, LCDR2 and LCDR3), wherein the HCDR1 comprises the amino acid sequence of SEQ ID NO: 3; the HCDR2 comprises the amino acid sequence of SEQ ID NO: 4; the HCDR3 comprises the amino acid sequence of SEQ ID NO: 5; the LCDR1 comprises the amino acid sequence of SEQ ID NO: 6; the LCDR2 comprises the amino acid sequence of SEQ ID NO: 7; and the LCDR3 comprises the amino acid sequence of SEQ ID NO: 8.
  • the present invention includes the method of embodiment 37, wherein the HCVR comprises the amino acid sequence of SEQ ID NO: 1 and the LCVR comprises the amino acid sequence of SEQ ID NO: 2.
  • the present invention includes the method of embodiment 36 or 37, wherein the antibody or antigen-binding fragment thereof comprises a heavy chain comprising the amino acid sequence of SEQ ID NO: 9 and a light chain comprising the amino acid sequence of SEQ ID NO: 10.
  • the present invention includes the method of any one of embodiments 1-38, wherein the IL-4R inhibitor is dupilumab or a bioequivalent thereof.
  • the present invention includes the method of embodiment 34, wherein the antibody or antigen-binding fragment thereof is MED19314 or AMG317.
  • the present invention includes the method of embodiment 42 or 43, wherein the IL-4R inhibitor is an anti-IL-4R antibody of any one of embodiments 34-41.
  • the present invention includes the method of any one of embodiments 42-44, wherein each dose of the IL-4R inhibitor comprises 1, 2, 3, 4 or 5 mg/kg of the patient's body weight, and wherein each dose is administered 1-4 weeks after the immediately preceding dose.
  • the present invention includes the method of any one of embodiments 42-44, wherein each dose comprises 20-600 mg of the IL-4R inhibitor, and wherein each dose is administered 1-4 weeks after the immediately preceding dose.
  • the present invention includes the method of any one of embodiments 42-46, wherein the administration of the IL-4R inhibitor leads to an effect selected from the group consisting of: (i) more than 30% reduction from baseline in EASI score by week 2 after administration of the first dose of the IL-4R inhibitor; (ii) more than 50% reduction from baseline in pruritus NRS; and (iii) a reduction from baseline in IGA score to achieve an IGA score of 0 or 1 by week 12 after administration of the first dose of the IL-4R inhibitor.
  • the present invention includes the method of any one of embodiments 42-47, wherein the IL-4R inhibitor is administered in combination with a second therapeutic agent selected from the group consisting of a topical corticosteroid, a topical calcineurin inhibitor, an anti-histamine, an emollient, an anti-bacterial therapeutic, and a therapeutic agent for obstructive airway disease.
  • a second therapeutic agent selected from the group consisting of a topical corticosteroid, a topical calcineurin inhibitor, an anti-histamine, an emollient, an anti-bacterial therapeutic, and a therapeutic agent for obstructive airway disease.
  • Example 1 Clinical Trial of Anti-IL-4R Antibody in Adult Patients with Severe Atopic Dermatitis (AD) Who are not Adequately Controlled with or are Intolerant to Cyclosporine A, or when this Treatment is not Medically Advisable
  • Dupilumab is a fully human anti-IL-4R antibody comprising a heavy chain comprising the amino acid sequence of SEQ ID NO: 9 and a light chain comprising the amino acid sequence of SEQ ID NO: 10; an HCVR/LCVR amino acid sequence pair comprising SEQ ID NOs: 1/2; and heavy and light chain CDR sequences comprising SEQ ID NOs: 3-8.
  • the study comprises a 2-week screening period, a 2-week medium-potency TCS standardization period, a 16-week treatment period, and a 12-week safety follow up period. This study is done to evaluate dupilumab treatment in these patients, who have also previously demonstrated inadequate response to TCS. All patients receive concomitant medium-potency TCS as background concomitant therapy to reflect standard of care treatment of this severe population.
  • the primary objective of the study is to evaluate the efficacy of 2 dose regimens of dupilumab compared to placebo, administered with concomitant topical corticosteroids (TCS), in adult patients with severe AD who are not adequately controlled with, or are intolerant to, oral CSA, or when this treatment is currently not medically advisable.
  • TCS topical corticosteroids
  • the secondary objective of the study is to assess the safety and tolerability of 2 dose regimens of dupilumab compared to placebo, administered with concomitant TCS, in adult patients with severe AD who are not adequately controlled with, or are intolerant to, oral CSA, or when this treatment is currently not medically advisable.
  • the study comprises a 2-week screening period, a 2-week medium-potency TCS standardization period, a 16-week treatment period, and a 12-week safety follow up period. This study is done to evaluate dupilumab treatment in these patients with severe AD who have also previously demonstrated inadequate response to TCS. All patients receive concomitant medium-potency TCS as background concomitant therapy to reflect standard of care treatment of this severe population.
  • patients are assessed for study eligibility at the screening visit. Patients undergo screening between day ⁇ 28 and day ⁇ 15, prior to randomization. During this 2-week screening period, TCS treatment is allowed at the discretion of the investigator.
  • the patients are stratified by: 1) Baseline assessment of disease severity (Investigator's Global Assessment [IGA] 3 vs IGA 4) and 2) documented history of no prior CSA exposure and not currently a candidate for CSA treatment or CSA prior exposure that should not be continued or restarted.
  • EASI Eczema Area Severity Index
  • a patient who meets any of the following criteria is excluded from the study: (1) Participation in a prior dupilumab clinical study; (2) Treatment with an investigational drug within 8 weeks or within 5 half-lives (if known), whichever is longer, prior to screening; (3) Hypersensitivity and/or intolerance to corticosteroids or to any other ingredients contained in the TCS product used in the study; (4) Systemic CSA, systemic corticosteroids, or phototherapy within 4 weeks prior to screening, and azathioprine (AZA), methotrexate (MTX), mycophenolate mofetil (MMF), or Janus kinase (JAK) inhibitors within 8 weeks prior to screening; (5) Treatment with a TCI within 1 week prior to the screening visit; (6) Treatment with biologics as follows: (a) Any cell-depleting agents including but not limited to rituximab: within 6 months before the screening visit, or until lymphocyte count returns to normal, whichever is longer; (b) Other biologics: within 5 half-lives (
  • Examples include, but are not limited to, patients with short life expectancy, patients with uncontrolled diabetes (hemoglobin A1c [HbA1c] ⁇ 9%), patients with cardiovascular conditions (e.g., stage III or IV cardiac failure according to the New York Heart Association classification), severe renal conditions (e.g., patients on dialysis), hepato-biliary conditions (e.g., Child-Pugh class B or C), neurological conditions (e.g., demyelinating diseases), active major autoimmune diseases (e.g., lupus, inflammatory bowel disease, rheumatoid arthritis, etc.), neuro-inflammatory disease, other severe endocrinological, gastrointestinal, metabolic, pulmonary or lymphatic diseases.
  • cardiovascular conditions e.g., stage III or IV cardiac failure according to the New York Heart Association classification
  • severe renal conditions e.g., patients on dialysis
  • hepato-biliary conditions e.g., Child-Pugh class B or C
  • neurological conditions e.g., dem
  • Patients receive either qw SC injections of 300 mg dupilumab (following a loading dose of 600 mg on day 1), or q2w SC injections of 300 mg dupilumab (following a loading dose of 600 mg on day 1) during the 16-week treatment period. During weeks in which dupilumab is not administered (in the q2w regimen), patients receive injectable placebo.
  • moisturizers should be applied once daily only at the time when TCS is not applied (i.e., do not use moisturizers and TCS on the same areas at the same time during the day).
  • moisturizers are not to be used in the evening on areas treated with TCS, but are applied to those areas in the morning. On areas not treated with TCS, moisturizers will be applied twice daily—morning and evening.
  • TCS tubes The type, amount, frequency, and potency of topical products used during the study is recorded at home by patients in a medication diary. Patients return TCS tubes at each clinic visit up until week 16, and these tubes are weighed by the site staff to determine the actual amount of TCS used. During the 12-week safety follow-up period, the weighing of tubes is no longer needed.
  • medium-potency TCS dosing frequency will be symptom-based (IGA score) adjusted every 4 weeks as per the following protocol-specified tapering algorithm:
  • Emollients are:
  • moisturizers emollients
  • baseline/day 1 All patients are required to apply moisturizers (emollients) at least twice daily for at least the 7 consecutive days immediately before randomization (baseline/day 1) and to continue throughout the study (all 32 weeks).
  • moisturizers should not be applied on the area(s) of non-lesional skin designated for such assessments for at least 8 hours before each clinic visit. All types of moisturizers are permitted, but patients may not initiate treatment with prescription moisturizers or moisturizers containing additives during the screening period or during the study. Patients may continue using stable doses of prescription moisturizers or moisturizers containing additives, if initiated before the screening visit.
  • rescue treatment for AD may be provided to study patients, starting with high-potency TCS and if needed, escalation to systemic medications for patients who do not respond adequately after at least 7 days of topical treatment.
  • the primary endpoint in the study is: the proportion of patients with Eczema Area and Severity Index (EASI) 75 ( ⁇ 75% improvement from baseline) at week 16.
  • EASI Eczema Area and Severity Index
  • the secondary endpoints are:
  • TEAEs skin infection treatment-emergent adverse events
  • TESAEs treatment-emergent serious adverse events
  • PK pharmacokinetic
  • ADA anti-drug antibodies
  • Efficacy is assessed using pruritus NRS, pruritus categorical scale, POEM, HADS, DLQI, the European Quality of Life-5 Dimensions (EQ-5D), Patient Global Assessment of Disease, Patient Global Assessment of Treatment, Asthma Control Questionnaire (ACQ-5), the Sino-Nasal Outcome Test (SNOT-22), assessment of sick leave/missed school days, IGA, EASI, BSA of involvement of AD, GISS and SCORAD.
  • Pruritus NRS, pruritus categorical scale, POEM, HADS, DLQI, the European Quality of Life-5 Dimensions (EQ-5D), Patient Global Assessment of Disease, Patient Global Assessment of Treatment, IGA, EASI, BSA of involvement of AD, GISS and SCORAD have been described in US Patent Application Publication 20140072583, incorporated herein in its entirety.
  • Juniper Asthma Control Questionnaire The 5-question version of the Juniper ACQ is a validated questionnaire to evaluate asthma control. The questionnaire is administered only to the subset of patients with a medical history of asthma and who fluently speak a language in which the questionnaire is presented (based on availability of validated translations in participating countries).
  • the SNOT-22 is a validated questionnaire to assess the impact of chronic rhinosinusitis on QOL.
  • the questionnaire is administered only to the subset of patients with chronic inflammatory conditions of the nasal mucosa and/or paranasal sinuses (e.g., chronic rhinitis/rhinosinusitis, nasal polyps, allergic rhinitis) who fluently speak a language in which the questionnaire is presented.
  • Biomarkers to be analyzed in this study are TARC and serum total IgE. These are exploratory assessments to further the understanding of AD-associated biomarkers and the response to dupilumab treatment.
  • Thymus and activation regulated chemokine and total IgE are markers of Th2 activity and are downstream of IL-4/13 signaling. These analytes are assessed as measures of Th2 activity and pharmacodynamic effect of the drug. These results may also be used for modeling dupilumab activity with drug levels.
  • Thymus and activation regulated chemokine levels have also been closely associated with AD disease activity and severity, and will be evaluated as an exploratory marker of efficacy. These markers may also be assessed for their potential value in predicting treatment response.
  • An Adverse Event is any untoward medical occurrence in a subject or clinical investigation subject administered a pharmaceutical product.
  • An AE can, therefore, be any unfavorable and unintended sign (including abnormal laboratory finding), symptom, or disease temporally associated with the use of a medicinal product, whether or not considered related to the medicinal (investigational) product.
  • AEs also include: any worsening (i.e., any clinically significant change in frequency and/or intensity) of a pre-existing condition that is temporally associated with the use of the study drug; abnormal laboratory findings considered by the Investigator to be clinically significant; and any untoward medical occurrence.
  • a Serious Adverse Event is any untoward medical occurrence that at any dose results in death; is life-threatening; requires in-patient hospitalization or prolongation of existing hospitalization; results in persistent or significant disability/incapacity; is a congenital anomaly/birth defect; or is an important medical event.
  • dupilumab administration will treat AD, including severe and/or refractory AD, in patients with severe AD who are not adequately controlled with, or are intolerant to, oral cyclosporine A, or when this treatment is currently not medically advisable.
  • Patients treated with dupilumab show significant improvement in at least one AD-associated parameter as compared to placebo.
  • Patients treated with dupilumab use up to 50% less TCS than placebo.
  • dupilumab dose regimens 300 mg qw+TCS; 300 mg q2w+TCS demonstrated robust efficacy across multiple clinical outcomes, reflecting improvements in objective signs of AD, pruritus, quality of life and mental health.
  • the primary endpoint at week 16 was achieved for both dupilumab dose regimens.
  • dupilumab q2w+TCS significantly improved patient-reported itch, sleep, skin symptoms, quality of life (QoL) and health status as measured by pruritus Numerical Rating Scale; Scoring Atopic Dermatitis visual analog scale for sleep loss; Patient-Oriented Eczema Measure; and Dermatology Life Quality Index.
  • Table 2 presents the primary and secondary efficacy results for the endpoints in the endpoint hierarchy specified in the SAP.
  • Table 3 summarizes some of patient-reported outcomes and the improvements against baseline values
  • N1 stands for number of patients with baseline NRS score ⁇ 4;
  • N1 stands for number of patients with baseline NRS score ⁇ 3;
  • BSA body surface area
  • DLQI Dermatology Life Quality Index
  • EQ-5D EuroQol five dimensions questionnaire
  • MedDRA Medical Dictionary for Regulatory Activities
  • NRS numerical rating scale
  • PGATE Patient Global Assessment of Treatment Effect
  • POEM Patient-Oriented Eczema Measure
  • q2w every 2 weeks
  • SCORAD Scoring Atopic Dermatitis
  • SE standard error
  • TCS topical corticosteroid.
  • EASI-75 In this 16-week study of dupilumab+TCS vs. placebo+TCS, the primary efficacy endpoint of EASI-75 at week 16 was met for both dupilumab dose regimens. EASI-75 responder rates at week 16 were 29.6% in placebo+TCS group, 62.6%, and 59.1% in dupilumab 300 mg q2w+TCS, and dupilumab 300 mg qw+TCS, respectively. All pre-specified key secondary and other secondary efficacy endpoints were met up to the endpoint of incidence of skin infection for the dupilumab 300 mg qw+TCS group.
  • dupilumab and concomitant TCS compared with TCS alone, significantly improved patient-reported itch, sleep, skin symptoms, and QoL, with an acceptable safety profile.
  • Example 2 Pharmacokinetics, Safety and Efficacy of Dupilumab in a Pediatric Population with Moderate-to-Severe or Severe AD: Results from a Phase 2a Clinical Trial
  • This Example describes a phase 2a, multicenter, open-label, ascending-dose, sequential-cohort study (NCT02407756) which included adolescents (12-17 years) with moderate-to-severe AD and children (6-11 years) with severe AD, uncontrolled by topical medications. Patients received 2 mg/kg or 4 mg/kg single-dose subcutaneous dupilumab with 8 weeks follow-up, followed by 4 weekly 2 mg/kg or 4 mg/kg doses.
  • the primary objective of the study was to characterize the safety and PK of dupilumab in pediatric patients with moderate-to-severe AD (for adolescents ⁇ 12 to ⁇ 18 years of age) or severe AD (for children ⁇ 6 to ⁇ 12 years of age).
  • the secondary objective of the study was to explore the immunogenicity and efficacy of dupilumab in pediatric patients with moderate-to-severe AD (for adolescents ⁇ 12 to ⁇ 18 years of age) or severe AD (for children ⁇ 6 to ⁇ 12 years of age).
  • dose cohort 1 (2 mg/kg) and dose cohort 2 (4 mg/kg) up to a maximum dose of 300 mg.
  • dose cohort 2 4 mg/kg up to a maximum dose of 300 mg.
  • approximately 36 to 40 patients were planned to be enrolled in 2 age subsets: subset A (adolescents ⁇ 12 to ⁇ 18 years of age) and subset B (children ⁇ 6 to ⁇ 12 years of age).
  • Enrollment and study dosing started with cohort 1A (2 mg/kg, adolescent age subset) and proceeded in sequence to cohort 1B (2 mg/kg, children ⁇ 6 to ⁇ 12 years of age subset), cohort 2A (4 mg/kg, adolescent age subset), and cohort 2B (4 mg/kg, children ⁇ 6 to ⁇ 12 years of age subset); a safety review of data from the previous cohort(s) was performed before proceeding to the next cohort.
  • the study consisted of a screening period (day ⁇ 35 to day ⁇ 1), a baseline visit, Part A (including a single-dose treatment followed by an 8-week semi-dense PK sampling period), and Part B (including a 4-week repeat-dose treatment period [4 weekly doses] followed by an 8-week follow-up period).
  • the study population included pediatric patients with moderate-to-severe AD (for adolescents aged ⁇ 2 to ⁇ 18 years at the time of baseline) or severe AD (for children aged ⁇ 6 to ⁇ 12 years at the time of baseline) that was not adequately controlled with topical medications.
  • BSA body surface area
  • Parent or legal guardian must have provided signed informed consent. Patients years of age (or above an age determined by the IRB/IEC and in accordance with the local regulations and requirements) must have also provided informed assent to enroll in the study, and must have signed and dated either a separate IAF or the ICF; and (9) Parent or legal guardian/patient, as appropriate, must have been able to understand and complete study-related questionnaires.
  • a patient who met any of the following criteria was excluded from the study: (1) Treatment with an investigational drug within 8 weeks or within 5 half-lives (if known), whichever was longer, before the baseline visit; (2) The following treatments within 2 weeks before the baseline visit a.
  • Systemic corticosteroids e.g., cyclosporine, mycophenolate mofetil, interferon-gamma, Janus kinase inhibitors, azathioprine or methotrexate
  • c. Phototherapy for AD Treatment with biologics as follows: a.
  • Any cell-depleting agents including, but not limited to, rituximab within 6 months before the baseline visit or until lymphocyte returned to normal, whichever was longer b.
  • Other biologics within 5 half-lives (if known) or 4 months before the baseline visit, whichever was longer; (4) Planned or anticipated use of any prohibited medications and procedures during study treatment; (5) Treatment with a live (attenuated) vaccine within 3 months before the baseline visit; (6) Active chronic or acute infection requiring treatment with systemic antibiotics, antivirals, antiprotozoals, or antifungals within 4 weeks before the baseline visit, or superficial skin infections within 1 week before the baseline visit; (7) Known or suspected immunodeficiency, including history of invasive opportunistic infections (e.g., tuberculosis, histoplasmosis, listeriosis, coccidioidomycosis, pneumocystosis, aspergillosis) despite infection resolution, or otherwise recurrent infections of abnormal frequency or prolonged
  • Sterile dupilumab drug product 150 mg/mL was provided in an aqueous buffered vehicle, pH 5.0. It was supplied in a 5-mL vial containing 2.5 mL (150 mg/mL) with a withdrawable volume of 2.0 mL or 300 mg of dupilumab. Study drug was administered SC by the investigator or other qualified study personnel at the following dose and dosing schedules:
  • Subcutaneous injection sites of the study drug were to be alternated among the different quadrants of the abdomen (avoiding navel and waist areas), upper thighs, and upper arms so that the same site was not injected for 2 consecutive weeks.
  • study drug was to be administered only into areas of normal-looking skin.
  • the primary objective was characterizing the PK profiles of dupilumab in pediatric AD patients aged ⁇ 6 to ⁇ 18 years.
  • the secondary endpoints were:
  • the proportion of adolescent patients diagnosed with AD within specified age ranges was generally similar between the dose cohorts, with the majority of patients in each dose cohort diagnosed before the age of 5 (Table 1).
  • the mean duration of AD was also similar between the dose cohorts. As expected, patients in the older age subsets within each dose cohort had a longer duration of AD than younger patients.
  • Mean baseline values for all AD assessments were consistent with moderate-to-severe AD. Differences in mean EASI score at baseline, mean pruritus NRS score, mean BSA and SCORAD score were minor and consistent with that expected in non-randomized groups (Table 5). Overall, the baseline disease characteristics were comparable between the 2 dose cohorts.
  • the proportion of patients aged ⁇ 6 to ⁇ 12 years diagnosed with AD within specified age ranges was generally similar between the dose cohorts, with the majority of patients in each dose cohort diagnosed before the age of 5 (Table 2).
  • the mean duration of AD was also similar between the dose cohorts.
  • patients in the older age subsets within each dose cohort had a longer duration of AD than younger patients.
  • Mean baseline values for all AD assessments were consistent with severe/moderate AD. Differences in mean EASI score at baseline, mean pruritus NRS score, mean BSA and SCORAD score were minor and consistent with that expected in non-randomized groups (Table 6). Overall, the baseline disease characteristics were comparable between the 2 dose cohorts.
  • Medical history was assessed using a general questionnaire, and specific atopic disease medical history was collected using a targeted questionnaire that elicited extensive atopic history.
  • the proportion of patients with a family history of atopic/allergic conditions was similar between the two dose cohorts.
  • the most common atopic/allergic condition in patient family history was AD (37.5% overall).
  • the most common atopic/allergic condition in patient family history in the 2 mg/kg dose cohort was AD (50.0%) whereas in the 4 mg/kg dose cohort it was Other Allergies (30.0%).
  • the most common current atopic/allergic condition other than AD was Other Allergies (60.0% overall; 55.0% in the 2 mg/kg dose cohort and 65.0% in the 4 mg/kg dose cohort).
  • the proportion of patients with a family history of atopic/allergic conditions was higher in the 4 mg/kg dose cohort than in the 2 mg/kg dose cohort.
  • the most common atopic/allergic condition in patient family history was AD (32.4% overall).
  • the most common atopic/allergic condition in patient family history in the 2 mg/kg dose cohort was Allergic Rhinitis (33.3%) whereas in the 4 mg/kg dose cohort it was AD (36.8%).
  • the most common current atopic/allergic conditions other than AD were Other Allergies and Food Allergy (64.9% overall each).
  • the incidence of current Food Allergy was higher in the 4 mg/kg dose cohort (73.7%) than in the 2 mg/kg dose cohort (55.6%).
  • Prior medications/procedures were defined as medications taken or procedures performed prior to the first administration of study drug.
  • TCS potent
  • TCI The most commonly used TCS in both dose cohorts was potent (Group III) TCS.
  • the use of TCI was also higher in the 2 mg/kg dose cohort than in the 4 mg/kg dose cohort.
  • Tacrolimus was the most commonly used TCI in both dose cohorts.
  • the number of adolescent patients who used any concomitant AD medication was higher during the Part A period (31 [77.5%]) than during the Part B period (11 [27.5%]).
  • TCS and TCI use in adolescents was higher for both dose cohorts during the Part A period compared to the Part B period. Systemic corticosteroid use was low and comparable between Part A and Part B.
  • dupilumab administered as a single dose of either 2 mg/kg or 4 mg/kg induced significant and rapid reduction of disease activity in patients at week 2 (34% and 51% reduction in EASI score from baseline for 2 mg/kg and 4 mg/kg doses respectively).
  • Repeated weekly doses of dupilumab led to a further improvement in disease severity in patients in both dose cohorts.
  • baseline EASI significantly improved by 66.4%/69.7%, and peak pruritus Numerical Rating Scale (NRS) by 30.8%/37.6%; 10%/35% achieved an Investigator Global Assessment (IGA) 0-1.
  • the dupilumab pharmacokinetic profile was consistent with adults; dupilumab provided clinical benefit (including itch improvement) faster than rates observed in adult clinical trials with a similar safety profile.
  • Treatment interruption may occur in clinical practice.
  • the objective of this study is to present the effect of treatment interruption on long-term safety and efficacy of dupilumab.
  • This Example presents an interim analysis of an ongoing multicenter, open-label trial (NCT01949311) of dupilumab treatment for up to 3 yrs.
  • Adults with moderate-to-severe atopic dermatitis (AD) were enrolled after participation in prior dupilumab trials.
  • Safety and efficacy at Week [Wk] 52 for dupilumab na ⁇ ve (previously unexposed) and retreated (>13 Wk gap between parent and open-label study) patients were evaluated.
  • Na ⁇ ve and retreated patients had 432.5 and 371.0 adverse events/100 patient years (AEs/100PY), 11.7 and 5.4 serious AEs/100PY, and 2.6% and 2.8% treatment discontinuations due to AEs, respectively; there were no deaths.
  • Example 4 Efficacy and Safety of Dupilumab in Adult Patients with Atopic Dermatitis Who were Candidates for Systemic Treatment with Cyclosporine: Subgroup Analysis from a One-Year Trial
  • Atopic dermatitis is a chronic inflammatory skin disease that may persist for decades requiring systemic therapy for extended periods of time.
  • Cyclosporine (CsA) provides a rapid and broad immunosuppressive effect but its long-term use is limited due to safety concerns including hypertension and impaired renal and hepatic function.
  • Dupilumab a fully human monoclonal antibody directed against interleukin (IL)-4 receptor alpha, inhibits type 2 cytokines IL-4 and IL-13. Long-term safety and efficacy of dupilumab was investigated in a phase 3 clinical trial (NCT02260986).
  • This Example describes a 1-year, double-blind, randomized, placebo-controlled, parallel-group study in adults with moderate-to-severe-AD and a history of inadequate response to topical corticosteroids (TCS).
  • TCS topical corticosteroids
  • Patients were randomized 3:1:3 (dupilumab 300 mg weekly [qw], every two weeks [q2w], or placebo).
  • Patients received concomitant low and/or medium potency TCS, which could be tapered and discontinued based on clinical response.
  • Topical calcineurin inhibitors could be used in areas considered inadvisable for TCS.
  • CsA-ineligible patients had, on average, more severe disease than CsA-eligible patients, as assessed by Eczema Area and Severity Index (EASI) (mean baseline ⁇ SD EASI score 36.9 ⁇ 13.09 vs 31.5 ⁇ 12.66; nominal p ⁇ 0.001 [post-hoc analysis]).
  • EASI Eczema Area and Severity Index
  • dupilumab treatment increased the proportion of patients achieving a 75% improvement in EASI (CsA-ineligible: 18.6% placebo, 52.4%/50.0% dupilumab q2w/qw; CsA-eligible: 22.4% placebo, 69.1%/67.0% dupilumab q2w/qw).
  • Dupilumab treatment also increased the proportion of patients achieving a ⁇ 4-point improvement in peak pruritus numerical rating scale at Week 52 (CsA-ineligible: 12.3% placebo, 42.9%/35.6% dupilumab q2w/qw; CsA-eligible: 13.0% placebo, 53.8%/39.7% dupilumab q2w/qw).
  • Treatment groups had similar treatment-emergent adverse event (TEAE) rates (CSA-ineligible: 88.5%, 91.7%/88.5%; CSA-eligible: 88.3%, 87.2%/81.7%).
  • TEAE treatment-emergent adverse event
  • dupilumab treatment increased the proportion of pts achieving a 75% improvement in EASI; and the proportion of pts achieving a ⁇ 4-point improvement in peak pruritus numerical rating scale (Table 7).
  • Treatment groups had similar treatment-emergent adverse event (TEAE) rates (Subset A: 88.9%, 90.9%/87.0%; Subset B: 83.5%, 87.5%/82.2%).
  • TEAEs The most common TEAEs were upper respiratory tract infections, nasopharyngitis, conjunctivitis, AD exacerbations, and injection site reaction.
  • dupilumab significantly improved signs and symptoms of AD regardless of a documented history of inadequate response or intolerance to CsA and even though these patients had significantly increased disease activity at baseline.
  • dupilumab improved signs and symptoms of AD in patients who were eligible for CsA.
  • CsA Cyclosporine
  • IL-4 receptor alpha monoclonal antibody potently inhibits both IL-4 and IL-13 signaling.
  • Dupilumab has been reported to improve AD outcomes while having an acceptable safety profile in 2 identically designed phase 3 trials of pts with moderate-to-severe AD (NCT02277743 and NCT02277769).
  • PBO placebo
  • dupilumab 300 mg every 2 weeks (q2w) or weekly (qw) for 16 weeks.
  • CsA-ineligible pts had, on average, more severe disease than CsA-eligible pts, as assessed by Eczema Area and Severity Index (EASI; mean baseline ⁇ SD EASI score 36.1 ⁇ 14.54 vs 32.1 ⁇ 13.35; nominal p ⁇ 0.0001).
  • EASI Eczema Area and Severity Index
  • dupilumab treatment increased the proportion of pts reaching a 75% improvement in EASI; achieving Investigator's Global Assessment 0-1; or reporting a ⁇ 4-point improvement in peak pruritus numerical rating scale (Table 8).
  • the most common treatment-emergent adverse events in these studies were nasopharyngitis, AD exacerbations, and injection site reactions.
  • bacterial conjunctivitis (CsA-ineligible 1.1%, 3.8%/4.2% PBO, dupilumab q2w/qw; CsA-eligible 0.3%, 0.6%/1.1%) and conjunctivitis rates (CsA-ineligible 2.3%, 1.9%/4.2%; CsA-eligible 0.3%, 5%/3.3%) were numerically higher in the dupilumab groups than in the PBO groups.
  • dupilumab treatment increased the proportion of pts reaching a 75% improvement in EASI (Table 5); achieving Investigator's Global Assessment 0-1 (Table 9); or reporting a ⁇ 4-point improvement in peak pruritus numerical rating scale (Table 9).
  • Dupilumab 16-week monotherapy significantly improves signs and symptoms of AD in both pts not eligible for treatment with CsA (even though these pts had significantly increased disease activity at baseline), as well as in those who were eligible for CsA treatment.
  • This Example presents pharmacokinetic (PK) data from two long-term phase 3 studies conducted to evaluate the efficacy and safety of dupilumab in adults with moderate-to-severe atopic dermatitis.
  • the clinical trial was a 52-week randomized, multicenter, double-blind, placebo-controlled trial of subcutaneous dupilumab with concomitant topical corticosteroids (TCS) in 740 adult patients (NCT02260986) randomized 3:1:3 to placebo, dupilumab 300 mg every 2 weeks (q2w) and dupilumab 300 mg every week (qw); patients randomized to dupilumab received a loading dose of 600 mg.
  • An open-label extension study of dupilumab 300 mg qw (NCT01949311) is ongoing in patients who participated in prior studies and results from 1076 patients treated for up to 68 weeks are also reported.
  • This Example describes functional dupilumab concentrations measured in serum from blood samples at various time-points and analyzed using descriptive statistics.
  • This Example describes pharmacokinetic (PK) data from two phase 3 studies conducted to assess the efficacy and safety of dupilumab monotherapy in adults with moderate-to-severe atopic dermatitis.
  • qw dupilumab 300 mg every week
  • dupilumab 300 mg every 2 weeks q2w
  • patients randomized to dupilumab received a loading dose of 600 mg Presented here are functional dupilumab concentrations measured in serum from blood samples at various pharmacokinetic time-points and analyzed using descriptive statistics.
  • Mean functional concentrations of dupilumab in serum increased from Week 2 to Week 16, reaching ⁇ 75 mg/L and 180 mg/L for the dupilumab 300 q2w and dupilumab 300 qw treatment groups, respectively, with a ratio (qw:q2w) of 2.4 at Week 16.
  • the mean C trough values at Week 12 indicated that dupilumab C trough values were at steady state at Weeks 12 through 16 with both dosing regimens.
  • a 600 mg loading dose enabled a rapid approach to steady state at the q2w dose, allowing ⁇ 80% of the Week 12 C trough to be reached by Week 4. With the qw dose, ⁇ 67% of the Week 12 C trough was reached by Week 4.
  • PK parameters included Geometric Mean Ratios (GMR) of AUC last (area under the plasma concentration-time curve from time zero to the time of the last quantifiable concentration) and C max (maximum observed plasma concentration) measured at Day 1 and Day 36, while efficacy assessments included changes in Eczema Area and Severity Index (EASI) scores (scale 0-72).
  • GMR Geometric Mean Ratios
  • EASI Eczema Area and Severity Index

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